Estate of Gaither Ex Rel. Gaither v. District of Columbia , 831 F. Supp. 2d 56 ( 2011 )


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  •                             UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF COLUMBIA
    ESTATE OF MIKAL R. GAITHER,
    by and through Pearl Gaither, Personal
    Representative,
    Plaintiff,
    Civil Action No. 03-01458 (CKK)
    v.
    DISTRICT OF COLUMBIA, et al.,
    Defendants.
    MEMORANDUM OPINION AND ORDER
    (December 19, 2011)
    Plaintiff Pearl Gaither (“Plaintiff”), the representative of the estate of Mikal R. Gaither
    (“Gaither”), brings this action against the District of Columbia (the “District”) and a series of
    individual defendants seeking damages in connection with Gaither’s fatal stabbing while he was
    incarcerated pending sentencing at the District’s Central Detention Facility. Plaintiff has
    indicated an intention to present expert testimony at trial from Michele Roberts, Esq. (“Roberts”)
    concerning the sentence Gaither likely would have received had he survived in support of her
    alleged damages. The matter comes to this Court on the District’s [113] Motion to Strike
    Plaintiff’s Expert Michelle [sic] Roberts, Esq. (“Motion to Strike”); the Honorable Magistrate
    Judge Alan Kay’s [120] Memorandum Order resolving the District’s Motion to Strike; Plaintiff’s
    [235] Updated Memorandum in Support of Expert Testimony of Plaintiff’s Sentencing Expert;
    the District’s [246] Updated Memorandum in Opposition to Plaintiff’s Updated Memorandum in
    Support of Plaintiff’s Sentencing Expert; and Plaintiff’s [236] Motion for Leave to Supplement
    Expert Report of Michele Roberts, Esq. (“Motion to Supplement”). Upon consideration of the
    parties’ submissions, the relevant authorities, and the record as a whole, the Court concurs with
    Magistrate Judge Kay that Roberts should be precluded from testifying as to her opinion of the
    sentence that Gaither likely would have received in his criminal case. However, the Court finds
    that Roberts may provide generalized testimony about the factors that a judge might take into
    account in the course of sentencing a criminal defendant, an issue that was not addressed by
    Magistrate Judge Kay in his Memorandum Order.
    I. BACKGROUND
    The Court assumes familiarity with its prior opinions in this action, which set forth in
    detail the extensive factual and procedural background of this case.
    On December 14, 2002, Gaither was fatally stabbed by a fellow inmate while incarcerated
    at the District’s Central Detention Facility. A subsequent investigation concluded that two of
    Gaither’s fellow inmates had forced Gaither into an open cell and proceeded to stab him, and
    indications were that Gaither had been killed because of his involvement in a grand jury
    investigation into the murder of an individual by the name of Kenneth Muldrow.
    Plaintiff brings this action on behalf of Gaither’s estate. She asserts claims under, inter
    alia, Section 1 of the Ku Klux Act of 1871, Rev. Stat. § 1979, as amended, 
    42 U.S.C. § 1983
    ,
    against the District and a series of individual officials and correctional officers, seeking
    compensatory damages against each defendant in the amount of $10 million.
    Significantly, at the time of his death, Gaither had already pleaded guilty to one felony
    count of distribution of cocaine and was awaiting sentencing in the Superior Court of the District
    of Columbia by the Honorable Judge Noël Anketell Kramer, who was then the Presiding Judge
    2
    of the Criminal Division.1 Under the statute that applied at the time, Gaither’s conviction carried
    a possible sentence ranging from probation to thirty years’ incarceration. See D.C. CODE § 33-
    541(a)(1) (1981). Due to Gaither’s untimely death, his actual sentence will never be known.
    Nevertheless, because the parties agree that Gaither would not have suffered lost wages for any
    period that he was incarcerated, the sentence Gaither likely would have received is an important
    ingredient of Gaither’s lifetime earning potential, which in turn is a large part of Plaintiff’s
    claimed compensatory damages in this case. Distilling the matter to its essence, should the jury
    ever need to reach the issue, the less time it finds that Gaither would have spent in jail, the
    greater Plaintiff’s damages.
    For this reason, during the course of discovery, Plaintiff designated Roberts to testify as a
    “sentencing expert” and, more precisely, to provide an opinion as to the sentence that Gaither
    likely would have received had he lived.2 Roberts subsequently prepared, and Plaintiff produced,
    a three-page written report, in which she stated her “opinion that, had he lived, Mr. Gaither
    would have been sentenced to probation for his first felony conviction on a single count of
    distribution of cocaine.” Report of Michele A. Roberts, Esq. (“Roberts’ Rep.”), ECF No. [113-
    3], at 1. According to her report, Roberts based her opinion on the following:
    (1)     Her experience representing criminal defendants in the District of Columbia;
    (2)     Her experience as a member of the Sentencing Commission for the District of
    1
    In 2005, Judge Kramer was appointed an Associate Justice of the District of Columbia
    Court of Appeals.
    2
    Neither side suggests that Judge Kramer ever reached a decision about how she would
    actually sentence Gaither. In any event, ethical considerations prevent Judge Kramer from
    testifying in this case. See Decl. of John Moustakas, Esq., ECF No. [235-10], ¶ 2.
    3
    Columbia;
    (3)     Her review of historical sentencing data and guidelines;
    (4)     Her review of information bearing on Gaither’s character, upbringing, and family
    history and circumstances; and
    (5)     Her review of information in documents provided by Plaintiff’s counsel.
    See id. at 1.
    While acknowledging that “the statutory maximum sentence for distribution of cocaine
    was 10 to 30 years at the time of Mr. Gaither’s offense,” Roberts opines in her report that “a
    defendant without a prior felony conviction was more likely than not to receive a sentence of
    probation upon conviction for this offense, both according to the relevant historical data and
    based on [her] own experience.” Id. According to Roberts, “[t]hat is because judges were
    generally concerned about proportionality in sentencing—i.e., treating like offenders alike—and,
    consequently, exercised their sentencing discretion in a manner that took into account criminal
    history as well as mitigating factors.” Id. In her report, Roberts identifies three “aggravating
    factors” and nine “mitigating factors”3 that she contends supports her opinion that Gaither likely
    would have received probation as a sentence. Id. at 2-3. The three aggravating factors include:
    (1)     Gaither’s testing positive for cocaine on three occasions—on September 19,
    September 30, and October 3, 2002, while under pretrial supervision and in
    violation of his conditions of release and after his graduation from a three-month
    3
    Consistent with the parties’ usage, the Court shall loosely use the terms “aggravating
    factors” and “mitigating factors” when speaking of factors negatively and positively affecting a
    criminal defendant’s sentence, rather than as terms of art often used in connection with
    standardized sentencing guidelines.
    4
    Harbor Lights residential drug treatment program;
    (2)     Gaither’s two prior misdemeanor convictions for possession of marijuana; and
    (3)     Gaither’s pending charge of felony possession with intent to distribute cocaine,
    which was set to be dismissed at sentencing but was nonetheless pending as of his
    death.
    See id. at 2. Meanwhile, the nine mitigating factors identified by Roberts in her report are as
    follows:
    (1)     Events in Gaither’s life that were “beyond his control” that “caused him to spiral
    into despair,” including the death of his sister, which Roberts indicates led Gaither
    to begin using drugs and to sell drugs to “feed his habit”;
    (2)     Gaither’s demonstrated “ability to succeed under court supervision,” having
    successfully completed probation in his two prior misdemeanor cases;
    (3)     Gaither’s successful completion of a three-month residential drug rehabilitation
    program, even though he “suffered a relapse after leaving the program,” and his
    active search for “further drug rehabilitation”;
    (4)     Gaither’s “deeply caring and supportive family”;
    (5)     Gaither’s access to “excellent role models,” in particular his mother and two older
    brothers, all of whom had “long and steady work histories”;
    (6)     Gaither’s “prior work history”;
    (7)     Gaither’s genuine interest in “improving his prospects,” including “developing
    marketable work skills”;
    (8)     Judge Kramer’s attendance at Gaither’s graduation from the drug rehabilitation
    5
    program and his funeral; and
    (9)    Gaither’s voluntary cooperation with a grand jury investigation of the murder of
    Kenneth Muldrow.
    Id. at 2-3.
    Believing that Roberts’ opinion, as set forth in her written report, did not satisfy the
    requirements of Rule 702 of the Federal Rules of Evidence, the District filed its [113] Motion to
    Strike, seeking to preclude Roberts from testifying on how a presiding judge may have ruled in
    Gaither’s case. See Mem. of P. & A. in Supp. of Defs.’ Mot. to Strike Pl.’s Expert Michelle [sic]
    Roberts, ECF No. [113]. Plaintiff subsequently filed an opposition, the District filed a reply,
    and, with the Court’s leave, Plaintiff filed a surreply. See Pl.’s Opp’n to the District of
    Columbia’s Mot. to Strike Pl.’s Sentencing Expert Roberts, ECF No. [114]; Def. District of
    Columbia’s Reply to Pl.’s Opp’n to the District of Columbia’s Mot. to Strike Expert Michelle
    [sic] Roberts, ECF No. [115]; Pl.’s Sur-Reply in Opp’n to the District of Columbia’s Mot. to
    Strike Pl.’s Experts, ECF No. [119]. In a detailed [120] Memorandum Order, Magistrate Judge
    Kay, to whom this action was referred under Local Civil Rule 72.2(a), granted the District’s
    Motion to Strike in relevant part. Magistrate Judge Kay concluded that Roberts should be
    precluded from testifying as to the opinion that Gaither likely would have received probation had
    he lived, finding that the methodology underlying her opinion, as reflected in her three-page
    written report, failed to meet the standards of reliability set forth in Rule 702. Magistrate Judge
    Kay was neither asked to, nor did, determine whether Roberts could provide more generalized
    testimony, such as testimony about the factors judges are likely to consider when sentencing a
    criminal defendant.
    6
    Subsequently, Plaintiff filed objections to Magistrate Judge Kay’s ruling, and the District
    filed a response to those objections. See Pl.’s Mem. of Law in Supp. of Her Objections to
    Magistrate Judge Kay’s Order Granting in Part the District’s Mot. to Strike Pl.’s Experts, ECF
    No. [126-1]; Def. District of Columbia’s Mem. of P. & A. in Opp’n to Pl.’s Mem. of Law in
    Supp. of Her Objections to Judge Kay’s Order Granting the District’s Mot. to Strike Pl.’s
    Sentencing Expert, ECF No. [129]. The Court heard oral argument on Plaintiff’s objections,
    during which the Court raised various questions concerning Roberts’ methodology and her
    ultimate conclusion. See Tr. of Status Hr’g, ECF No. [187]. Later, without objection, the Court
    held a thorough Daubert hearing,4 during which the parties had a full and fair opportunity to
    probe the reliability of Roberts’ methodology and conclusions. See Tr. of Daubert Hr’g, ECF
    No. [188]. Following the hearing, the parties filed supplemental memoranda addressing the
    reliability of Roberts’ proffered testimony. See Def. District of Columbia’s Suppl. Mem. of P. &
    A. in Opp’n to Pl.’s Objections to Judge Kay’s Order Granting the District’s Mot. to Strike
    Michele Roberts, Esq., as a Sentencing Expert in this Case, ECF No. [153]; Pl.’s Am. Opp’n to
    Defs.’ Suppl. Mem. of P. & A. in Opp’n to Pl.’s Objections to Magistrate’s Order Striking Pl.’s
    Sentencing Report, ECF No. [172-1]; Pl.’s Am. Notice of Filing of Signed Decl. of Michele A.
    Roberts, Esq., ECF No. [177]; Defs.’ Reply to Pl.’s Opp’n to Defs.’ Suppl. Mem. of P. & A. in
    Opp’n to Pl.’s Mem. of Law in Supp. of Her Objections to Judge Kay’s Order Granting in Part
    the District’s Motion to Strike Pl.’s Experts, ECF No. [176].
    Thereafter, a number of developments changed the landscape of this case. Most notably,
    4
    The phrase is a reference to the United States Supreme Court’s opinion in Daubert v.
    Merrell Dow Pharmaceuticals, Inc., 
    509 U.S. 579
     (1993).
    7
    the Court resolved the parties’ cross-motions for summary judgment and granted Plaintiff leave
    to amend her complaint. See Estate of Gaither ex rel. Gaither v. District of Columbia, 
    655 F. Supp. 2d 69
     (D.D.C. 2009). Accordingly, the Court invited the parties to inform the Court
    whether they believed additional briefing as to the admissibility of Roberts’ testimony would be
    desirable. See Order, ECF No. [222]. After the parties weighed in, the Court set a schedule for
    the submission of updated memoranda. See Min. Order (Mar. 31, 2011). The parties were
    directed to file consolidated memoranda and were expressly warned that their “submissions must
    raise any and all arguments they may have regarding the admissibility of Roberts’ testimony at
    trial” and that the Court would “not consider prior submissions.” 
    Id.
     (emphasis added). Plaintiff
    filed her memorandum on April 20, 2011. See Pl.’s Updated Mem. in Supp. of Expert Test. of
    Pl.’s Sentencing Expert (“Pl.’s [235] Mem.”), ECF No. [235]. The District filed its
    memorandum on May 11, 2011. See Def.’s Updated Mem. in Opp’n to Pl.’s Updated Mem. in
    Supp. of Pl.’s Sentencing Expert (“Def.’s [246] Mem.”), ECF No. [246]. These memoranda
    supersede the parties’ prior submissions on this matter and, as a result, are the primary focus of
    the Court’s attention in this Memorandum Opinion and Order.
    Plaintiff claims to have discovered additional materials supporting Roberts’ opinion since
    the Court held the Daubert hearing. Specifically, Plaintiff has since located:
    (1)     A Presentence Investigation Report drafted in March 2002 in connection with
    Gaither’s criminal case before Judge Kramer; and
    (2)     Transcripts of hearings before Judge Kramer in Gaither’s criminal case.
    Plaintiff filed her [236] Motion to Supplement, seeking leave to supplement Roberts’ expert
    report to reference these additional materials. See Pl.’s Mem. of P. & A. in Supp. of Her Mot. for
    8
    Leave to Supplement Expert Report of Michele Roberts, Esq., ECF No. [236-1]. The District
    filed an opposition to Plaintiff’s Motion to Supplement. See Def.’s Mem. of P. & A. in Opp’n to
    Pl.’s Mot. to Supplement Expert Report of Michele Roberts, Esq., ECF No. [245]. Plaintiff filed
    a reply. See Reply in Supp. of Pl.’s Mot. for Leave to Supplement Expert Report of Michele
    Roberts, Esq., ECF No. [251]. In her proposed supplemental written report, Roberts references
    the additional materials to support “additional mitigating facts.” Suppl. Report of Michele A.
    Roberts, Esq. (“Suppl. Roberts’ Rep.”), ECF No. [236-10], at 3. Her underlying opinion, and
    accompanying methodology, remain fundamentally the same as in her original written report.
    See id. at 1.
    II. LEGAL STANDARD
    Rule 702 of the Federal Rules of Evidence governs the admission of expert testimony:
    A witness who is qualified as an expert by knowledge, skill,
    experience, training, or education may testify in the form of an
    opinion or otherwise if:
    (a)    the expert’s scientific, technical, or other specialized
    knowledge will help the trier of fact to understand the
    evidence or to determine a fact in issue;
    (b)    the testimony is based on sufficient facts or data;
    (c)    the testimony is the product of reliable principles and
    methods; and
    (d)    the expert has reliably applied the principles and
    methods to the facts of the case.
    FED . R. EVID . 702.5 The trial judge has “considerable leeway in deciding in a particular case how
    to go about determining whether particular testimony is reliable.” Kumho Tire Co., Ltd. v.
    5
    The Court references the amended Federal Rules of Evidence that became effective on
    December 1, 2011, which will apply at the trial in this case.
    9
    Carmichael, 
    526 U.S. 143
    , 152 (1999). “Exactly how reliability is evaluated may vary from case
    to case, but what remains constant is the requirement that the trial judge evaluate the reliability of
    the testimony before allowing its admission at trial.” United States v. Frazier, 
    387 F.3d 1244
    ,
    1262 (11th Cir. 2004) (en banc), cert. denied, 
    544 U.S. 1063
     (2005). In all cases, “[t]he trial
    judge . . . must find that [the proffered testimony] is properly grounded, well-reasoned and not
    speculative before it can be admitted.” FED . R. EVID . 702 advisory committee’s note (2000
    amends.).
    III. PRELIMINARY MATTERS
    As a preliminary matter, the parties disagree as to the scope of the Court’s review of the
    District’s [113] Motion to Strike, which comes to this Court upon Plaintiff’s objections to
    Magistrate Judge Kay’s [120] Memorandum Order granting the District’s motion in relevant part
    and precluding Roberts from testifying at trial as to the sentence Gaither likely would have
    received had he survived. Because the motion was decided by Magistrate Judge Kay pursuant to
    a reference under Local Civil 72.2(a), this Court may modify or set aside any portion of his
    decision “found to be clearly erroneous or contrary to law.” LCV R 72.2(c); accord 
    28 U.S.C. § 636
    (b)(1)(A); FED . R. CIV . P. 72(a). In the abstract, this means that the Court conducts a plenary
    review of matters of law, but is bound by Magistrate Judge Kay’s findings of fact and
    discretionary determinations unless they are clearly erroneous. Am. Ctr. for Civil Justice v.
    Ambush, __ F. Supp. 2d __, 
    2011 WL 2600497
    , at *4 (D.D.C. July 1, 2011). However, because
    the admissibility of expert testimony frequently turns on legal questions “intertwined with factual
    issues that are in turn tinged with aspects of discretion,” Charles A. Wright et al., FEDERAL
    PRACTICE AND PROCEDURE § 3069 (2d ed. 1987), the scope of the Court’s review is “not
    10
    monolithic,” Milward v. Acuity Specialty Prods. Grp., Inc., 
    639 F.3d 11
    , 13 (1st Cir. 2011)
    (citation omitted); see also Norris v. Baxter Healthcare Corp., 
    397 F.3d 878
    , 883 (10th Cir.
    2005). Nonetheless, the guiding principle—that the trial judge may not substitute her judgment
    for the magistrate’s—remains the same.
    However interesting the interaction between these principles may be, they need not detain
    the Court long here for the simple reason that the result is the same regardless of the standard of
    review applied. On the one hand, the Court finds that Magistrate Judge Kay’s determination that
    Roberts should be precluded from testifying about the sentence that Gaither likely would have
    received had he survived is not clearly erroneous, contrary to law, or an abuse of discretion. On
    the other hand, even if the Court were to subject the admissibility of Roberts’ testimony to
    plenary review, it would similarly conclude, in an exercise of its broad discretion, that Roberts
    should be precluded from testifying about the sentence that Gaither likely would have received
    had he lived to be sentenced in his criminal case.
    For purposes of economy and clarity, the Court’s discussion below shall be styled simply
    as if the Court conducted a plenary review, the standard of review that is more generous to
    Plaintiff’s position. Such an approach is particularly useful in this case because, in the time since
    Magistrate Judge Kay rendered his opinion, the parties have refined their positions and legal
    arguments and the Court has the benefit of having conducted a Daubert hearing. It is also helpful
    because some of the matters now before the Court were not before Magistrate Judge Kay at all,
    including Plaintiff’s [236] Motion to Supplement and the question of whether Roberts may
    provide generalized testimony about the factors that a judge might take into account in the course
    of sentencing a criminal defendant. See Liberty Lobby, Inc. v. Rees, 
    852 F.2d 595
    , 599 (D.C. Cir.
    11
    1988) (noting that matters that were not before the magistrate judge are not binding on the
    district court), cert. denied, 
    489 U.S. 1010
     (1989).
    IV. DISCUSSION
    Plaintiff has indicated her intention to call Roberts at trial to testify as to her “opinion
    that, had he lived, Mr. Gaither would have been sentenced to probation for his first felony
    conviction on a single count of distribution of cocaine.” Roberts’ Rep. at 1; see also Suppl.
    Roberts’ Rep. at 1 (same). More precisely, in a refinement that did not crystallize until after
    Magistrate Judge Kay rendered his decision, Plaintiff intends to call Roberts to testify “about
    how a reasonable judge (including Judge Kramer) would have decided Mr. Gaither’s sentence
    and that the likely sentence would have been probation.”6 Pl.’s [235] Mem. at 1. The District
    challenges the admissibility of Roberts’ proferred testimony under Rule 702 of Federal Rules of
    Evidence, which requires Roberts’ opinion to be (1) “help[ful to] the trier of fact,” (2) “based on
    sufficient facts or data,” and (3) “the product of reliable principles and methods,” that are (4)
    “reliably applied . . . to the facts of the case.” FED . R. EVID . 702.7 For the reasons set forth
    6
    Roberts’ original three-page written report, which was the focus of Magistrate Judge
    Kay’s attention, made no mention of the “reasonable judge” and instead referenced only Judge
    Kramer.
    7
    Rule 702 also requires the witness to be “qualified as an expert by knowledge, skill,
    experience, training, or education.” FED . R. EVID . 702. In this case, there is no dispute that
    Roberts has significant experience and knowledge about sentencing practices, including
    sentencing practices in the Superior Court of the District of Columbia, where Gaither’s criminal
    case was pending at the time of his death. From 1980 to 1988, Roberts was an attorney with the
    Public Defender Service, during which she had a four-year tenure as the Deputy Chief of the
    Trial Division. See Decl. of Michele A. Roberts, Esq. (“Roberts Decl.”), ECF No. [235-9], ¶ 3.
    From 1988 to 2001, she represented criminal defendants in private practice. See Tr. of Daubert
    Hr’g at 32-33. Since 2001, she has served as a member of the Sentencing Commission for the
    District of Columbia and has continued her private practice. 
    Id. at 19
    .
    12
    below, the Court concurs with Magistrate Judge Kay that Roberts should be precluded from
    testifying as to her opinion of the sentence that Gaither likely would have received in his criminal
    case, regardless of whether that testimony is framed in terms of how a “reasonable judge” or how
    Judge Kramer would have sentenced Gaither. However, the Court finds that Roberts may
    provide generalized testimony about the factors that a judge might take into account in the course
    of sentencing a criminal defendant.
    A.      Plaintiff Has Conceded that Roberts Cannot Testify as to the Sentence Judge
    Kramer Likely Would Have Imposed in Gaither’s Criminal Case
    The Court begins by denoting what is no longer in dispute. According to Plaintiff,
    Roberts will “testify about how a reasonable judge . . . would have decided Mr. Gaither’s
    sentence.” Pl.’s [235] Mem. at 1 (emphasis added). She disclaims that Roberts will “make any
    attempt to predict the likely sentence Judge Kramer would have imposed.” 
    Id. at 19
     (emphasis
    added). Based on this explicit concession, the Court shall preclude Roberts from testifying as to
    the sentence Judge Kramer likely would have imposed in Gaither’s criminal case.
    B.      Roberts Cannot Testify as to Her Opinion that Judge Kramer Was“Down the
    Middle” and “Not an Outlier” in Her Sentencing Practices
    In a stunning feat of legal jujitsu, Plaintiff at one moment disclaims that Roberts will
    “make any attempt to predict the likely sentence Judge Kramer would have imposed,” Pl.’s [235]
    Mem. at 19, and then proceeds to represent that Roberts will testify “about how a reasonable
    judge (including Judge Kramer) would have decided Mr. Gaither’s sentence,” 
    id. at 1
     (emphasis
    added). Through this act of contortion, Plaintiff, quite transparently, seeks to backdoor an
    opinion about the sentence Judge Kramer likely would have imposed in Gaither’s case by
    13
    characterizing Judge Kramer as a “reasonable judge.” But what Plaintiff seems to recognize she
    cannot get through the front door cannot come in through the back.
    Conveniently glossed over by Plaintiff is that she needs Roberts to offer two different
    opinions to get to her desired end-point. Specifically, Roberts must first opine about how a
    “reasonable judge” would have sentenced Gaither. Then, she must opine about how Judge
    Kramer was situated vis-à-vis the so-called “reasonable judge.” In this regard, the connective
    tissue, as it were, is Roberts’ opinion that Judge Kramer was “down the middle” and “not an
    outlier” in her sentencing practices.
    Plaintiff’s efforts fail at both stages. At the first stage, Roberts cannot offer an opinion as
    to how a “reasonable judge” would have sentenced Gaither, a matter the Court addresses below.
    See infra Part IV.C. However, even assuming that Roberts could offer such an opinion, the
    Court would nonetheless find that Roberts cannot offer an opinion as to whether Judge Kramer
    was “down the middle” and “not an outlier” in her sentencing practices because Plaintiff has
    failed to show that such an opinion would be “based on sufficient facts or data” and “the product
    of reliable principles and methods.”8 FED . R. EVID . 702.
    At the Daubert hearing, Roberts testified as follows:
    Q.      * * * Do you have an opinion based on your experience at the
    Public Defender Service, particularly seeing cases that you
    supervised that came before Judge Kramer as to what she
    would have done?
    A.      What Judge Kramer would have done?
    8
    The Court, of course, expresses no opinion as to Judge Kramer’s actual sentencing
    practices; rather, the Court’s review is confined to the record supporting Roberts’ proffered
    testimony.
    14
    Q.     Yes.
    A.     I believe that she would have, as a reasonable judge, and I
    think Judge Kramer is a reasonable judge, she would have
    imposed a sentence of probation.
    Q.     Do you have a basis for knowing, during your time as —
    particularly as a supervisor in seeing the larger volume of
    cases you described earlier, whether Judge Kramer was
    regarded as an outlier judge or as a sort of down the middle
    judge?
    A.     Judge Kramer was considered down the middle. She was not
    an outlier.
    Tr. of Daubert Hr’g at 57. But when pressed to explain the basis for her opinion that Judge
    Kramer is a “reasonable judge,” “down the middle,” or “not an outlier,” Roberts conceded that
    she had not reviewed data specific to Judge Kramer’s historical sentencing patterns, as opposed
    to judges of the Superior Court as a whole.9 See 
    id. at 62-63, 66-67
    . Instead, Roberts testified
    that she has “some sense” of what Judge Kramer’s sentencing practices were in the relevant time
    period because her tenure in the Public Defenders Service “overlapped with the time that Judge
    Kramer was on the bench.” 
    Id. at 17
    . Despite this assertion, by her own admission, Roberts’
    opinion of Judge Kramer’s sentencing practices “did not come from [her] own experience,” 
    id. at 108-09
    , and she concedes that she has “no memory one way or the other” of whether she ever
    9
    Plaintiff avers that “there is no judge-specific sentencing data available,” Pl.’s [235]
    Mem. at 20 (citing Aff. of Kim. S. Hunt (“Hunt Decl.”), ECF No. [235-12], ¶ 11), but the
    evidence relied upon by Plaintiff, an affidavit from the Executive Director of the Sentencing
    Commission for the District of Columbia, does not support such a broad assertion. Rather, the
    Executive Director merely affirms, to the best of her knowledge, that there is no pre-existing
    judge-specific breakdown of a particular statistical analysis used by the Sentencing Commission
    to evaluate the historical sentencing patterns for judges across the Superior Court. See Hunt
    Decl. ¶ 11. Accordingly, it is undisputed that Roberts’ opinion about how Judge Kramer was
    situated vis-à-vis the so-called “reasonable judge” is not based on sentencing data specific to
    Judge Kramer.
    15
    had a case analogous to Gaither’s before Judge Kramer, 
    id. at 70
    .
    With this limited showing, Plaintiff has failed to satisfy the Court that Roberts’ opinion
    about how Judge Kramer was situated vis-à-vis the so-called “reasonable judge” is “based on
    sufficient facts or data” and “the product of reliable principles and methods.” FED . R. EVID . 702.
    The record is devoid of any meaningful measure of detail about the extent of Roberts’ experience
    with and knowledge of Judge Kramer’s sentencing practices specifically. This Court is not
    required to “admit opinion evidence that is connected to existing data only by the ipse dixit of the
    expert.” Gen. Elec. Co. v. Joiner, 
    522 U.S. 136
    , 146 (1997). In this case, apart from knowing
    that Roberts has some knowledge of Judge Kramer’s sentencing habits by virtue of her
    experience (knowledge that is largely secondhand), the Court is left only with Roberts’
    unvarnished opinion that Judge Kramer is a “reasonable judge,” “down the middle,” or “not an
    outlier.” Cf. Frazier, 
    387 F.3d at 1253
     (upholding trial judge’s decision to exclude expert
    testimony where expert identified a single specific investigation involving the subject matter of
    his opinion; the expert “made no effort to quantify in any way the number of cases he was
    personally involved in” that implicated the same subject matter). To put it simply, there is too
    great an analytical gap between the factual basis and the proffered opinion to satisfy the Court
    that Roberts’ opinion is “based on sufficient facts or data” and “the product of reliable principles
    and methods.” FED . R. EVID . 702.10 Accordingly, the Court shall preclude Roberts from
    10
    Nor has Plaintiff established that Roberts’ opinion could be “reliably applied . . . to the
    facts of the case,” FED . R. EVID . 702, given Roberts’ inability to identify with any meaningful
    level of detail the extent of her experience with and knowledge of Judge Kramer’s practices in
    sentencing criminal defendants similarly situated to Gaither. Whether Judge Kramer was “down
    the middle” or “not at outlier” when sentencing defendants charged with different criminal
    offenses, for example, is immaterial to her proffered opinion in this action.
    16
    testifying as to her opinion that Judge Kramer was a “reasonable judge,” “down the middle,” and
    “not an outlier” in her sentencing practices.
    C.      Roberts Cannot Testify as to the Sentence a “Reasonable Judge” Likely Would
    Have Imposed in Gaither’s Criminal Case
    The Court now turns to the heart of Roberts’ proffered testimony. According to Plaintiff,
    Roberts will “testify about how a reasonable judge . . . would have decided Mr. Gaither’s
    sentence.” Pl.’s [235] Mem. at 1. In an exercise of its broad discretion in these matters, the
    Court finds that Roberts’ opinion as to how a “reasonable judge” would have sentenced Gaither
    should be excluded under both Rule 702 and Rule 403 of the Federal Rules of Evidence. The
    Court addresses each ground for exclusion in turn.
    1.      Rule 702
    To reiterate, Rule 702 requires Roberts’ opinion to be, inter alia, (1) “based on sufficient
    facts or data,” and (2) “the product of reliable principles and methods,” that are (3) “reliably
    applied . . . to the facts of the case.” FED . R. EVID . 702.
    i.      “Sufficient Facts or Data”
    In this case, the Court shall first assume, without deciding, that Roberts’ substantial
    experience and knowledge of sentencing practices in the Superior Court, the same factors that
    qualify her as an expert to begin with, coupled with her review of historical sentencing data
    compiled by others, constitute “sufficient facts or data” to support some form of a predictive
    judgment about how a judge might sentence a criminal defendant in a particular case. See Tr. of
    Daubert Hr’g at 19 (identifying the bases for Roberts’ proffered opinion); Roberts’ Rep. at 1
    17
    (same).11 At the very least, the record is consistent with such an assumption. As an experienced
    practitioner, Roberts was consistently called upon to make a predictive judgment about the
    sentence a client might receive, and she testified that this task was important to her day-to-day
    work over the years:
    Q.      . . . [W]hat role did the evaluation of or assessment of the
    client’s exposure play in your every day life as a line defender
    handling distribution, PWID, possession with intent to
    distribute cases?
    A.      It was fairly critical . . . . Most of the cases, I venture to say
    as many as 75 percent to 80 percent of the cases resulted in a
    disposition, meaning a plea as opposed to going to trial. So,
    evaluating the case for purposes of determining what the
    likely sentence was for something, you would do routinely
    and consistently. Also, those cases were the kind of cases
    where you were most likely to receive a plea offer from the
    Government very early on in the life of the case. * * * In
    drug cases, frequently you’d receive a plea offer at the very
    same time that the case would come into the system. So that
    was something — assessing the case for potential sentencing
    was something we did routinely.
    Q.      And do you have an opinion about whether that assessment
    was something that clients came to ask for an eventually —
    and also to rely on?
    A.      Absolutely.
    Q.      . . . [T]ell the Court what impact, knowing that the clients
    would put such reliance on your evaluation of the merits of
    the case and the likely sentence if the case were to result in a
    plea, what impact that had on the rigor with which you
    approached the assessment of the case.
    A.      Well, the client wanted to know, frankly, whether it was
    worth the risk of trial. And my ability to communicate to the
    client what I believed the sentence would be and why I
    11
    The additional materials identified in Roberts’ proffered supplemental report would
    not alter the Court’s analysis.
    18
    believe[d] the sentence would be what I was predicting was
    critical in their determination of whether to waive their rights
    to a trial by jury or not. To be right was not only useful, but
    important. And so, yes, I mean, the question, “[W]hat am I
    facing[?]” was fairly routine in my practice.
    Tr. of Daubert Hr’g at 12-13. To quantify this experience, Roberts claims that she has had some
    level of involvement in somewhere between 1,500 to 2,400 criminal drug cases in the period
    from 1988 to 2001, either as a trial attorney or as a supervisor of other trial attorneys. See id. at
    96-100; Roberts Decl. ¶ 3. In the time period after Gaither would have been sentenced, Roberts
    garnered additional experience as a member of the Sentencing Commission for the District of
    Columbia, which required her involvement in discussions about sentencing philosophies and
    trends, as well as in her private practice. See Tr. of Daubert Hr’g at 19, 102. On this record, the
    Court shall assume that Roberts’ opinion is “based on sufficient facts or data.” FED . R. EVID .
    702.12
    ii.    “Reliable Principles and Methods”
    Even with the foregoing assumption, Plaintiff still must show that Roberts’ opinion is
    “the product of reliable principles and methods.” FED . R. EVID . 702. In this regard, Plaintiff
    fairly summarizes Roberts’ relied-upon “methodology” for making a predictive sentencing
    judgment as follows:
    12
    The assumption is not an unassailable one. Roberts’ experience with sentencing
    generally, or sentencing in criminal drug cases, does not ineluctably lead to the conclusion that
    she has sufficient experience in each of the sentencing considerations relevant to Gaither’s case.
    For instance, Roberts testified that she believes that criminal defendants who cooperate with
    authorities without the benefit of a formal cooperation agreement, like Gaither, are treated more
    favorably by sentencing judges than criminal defendants who cooperate with the benefit of a
    formal cooperation agreement. See Tr. of Daubert Hr’g at 54-55. However, Roberts concedes
    that her personal experience was limited to “a couple” of instances in which a criminal defendant
    participated without the benefit of a formal cooperation agreement. Id. at 54.
    19
    In assessing the likely sentence, . . . [Roberts] considers: the nature of
    the offense, whether the offender pleads guilty or is convicted at trial,
    social and family history, employment history, ties to the community,
    and certain positive and negative factors that are demonstrated to
    either lower or raise the sentence.
    Pl.’s [235] Mem. at 10 (citing Tr. of Daubert Hr’g at 36-37, 50-52).13 Plaintiff contends that
    Roberts’ “methodology — comparing the relevant sentencing factors in a particular case to
    thousands of prior sentences involving similar factors — is sound” because “[m]aking such
    assessments in advising clients and, later[,] lawyers she supervised, was her stock-in-trade as a
    highly regarded Assistant Public Defender, in which capacity she generated a considerable
    volume of sentence comparators.” Id. at 1-2.
    In tendering this argument, Plaintiff effectively conflates two separate questions under
    Rule 702—whether the proffered opinion is “based on sufficient facts or data” and whether it is
    “the product of reliable principles and methods.” FED . R. EVID . 702. The Court does not doubt
    that there will be some interplay between these questions where, as here, an expert relies
    primarily on her experience and knowledge as a basis for her opinion. “[N]o one denies that an
    expert might draw a conclusion from a set of observations based on extensive and specialized
    experience,” Kumho Tire, 526 U.S. at 156, and in some cases, “the relevant reliability concerns
    13
    Elsewhere, Plaintiff describes the “principles” underlying Roberts’ methodology in the
    following manner:
    The major premises underlying her opinion are that similarly-situated
    individuals generally receive similar sentences; that sentencing is
    graduated and proportional; and that certain positive or sympathetic
    factors will tend to produce a lower sentence while certain negative
    or unsympathetic factors will tend to do the opposite.
    Pl.’s [235] Mem. at 15.
    20
    may focus on personal knowledge or experience,” id. at 150. But that “does not mean that
    experience, standing alone, is a sufficient foundation rendering reliable any conceivable opinion
    the expert may express.” Frazier, 
    387 F.3d at 1261
    . Even when an expert relies upon her
    experience, “the reliability criterion remains a discrete, independent, and important requirement
    for admissibility.” 
    Id.
     Thus, where, as here, the expert relies “primarily on experience, then the
    witness must explain how that experience leads to the conclusion reached, why that experience is
    a sufficient basis for the opinion, and how that experience is reliably applied to the facts.” FED .
    R. EVID . 702 advisory committee’s note (2000 amends.); accord Metavante Corp. v. Emigrant
    Sav. Bank, 
    619 F.3d 748
    , 761 (7th Cir. 2010), cert. denied, __ U.S. __, 
    131 S. Ct. 1784
     (2011).
    Because the standards for the admission of expert testimony are flexible by design, the
    trial judge’s discretion extends not only to her substantive judgment, but also to her threshold
    determination as to how reliability should be evaluated. Kumho Tire, 526 U.S. at 152. In this
    regard, the Court is in complete agreement with Plaintiff that the law does not support the rigid
    application of the factors articulated by the United States Supreme Court in Daubert v. Merrell
    Dow Pharmaceuticals, Inc., 
    509 U.S. 579
     (1993).14 The Court also agrees with Plaintiff that
    Roberts’ testimony is not per se inadmissible simply because, as Plaintiff concedes, it is
    “unsupported by peer review” and “lack[s] statistical analysis or studies,” Pl.’s [235] Mem. at 13,
    factors that are commonly associated with scientific or technical expert testimony. The Court
    also accepts that the sort of testimony at issue in this case does not easily lend itself to scholarly
    14
    Those factors include: (1) whether the method can be and has been tested; (2) whether
    the method has been subjected to peer review and publication; (3) whether there is a high
    potential rate of error; (4) whether there are standards controlling the method’s operation; and (5)
    whether the method enjoys general acceptance within the relevant community. See Daubert, 
    509 U.S. at 592-94
    .
    21
    review or traditional scientific evaluation. Nonetheless, the Court departs with Plaintiff to the
    extent she intends to suggest that the factors identified in Daubert are irrelevant in this case.
    Daubert should not be “slavishly applied” in this context. Id. at 17. But neither should it be
    disregarded.
    Contrary to what Plaintiff may believe, “some of Daubert’s questions can help to evaluate
    the reliability even of experience-based testimony.” Kumho Tire, 526 U.S. at 151. In particular,
    the Supreme Court has acknowledged that, in some cases, it will be appropriate to ask how often
    an expert’s experience “has produced erroneous results.”15 Id. This happens to be one of those
    cases. In this case, even while acknowledging that Gaither’s conviction carried a possible
    sentence ranging from probation to thirty years’ incarceration, Roberts’ opinion is that, “had he
    lived, Mr. Gaither would have been sentenced to probation.” Roberts’ Rep. at 1. This is a
    predictive judgment, and a rather precise one at that.
    Given the nature of the proffered opinion, the Court would expect Plaintiff to offer some
    indication of the “rate of error” of Roberts’ predictive methodology. Daubert, 
    509 U.S. at 594
    .
    To put it in the most simple terms, while the Court has no doubt that Roberts was consistently
    called upon to make predictive judgments about the sentence clients might receive in the course
    15
    Citing a solitary footnote from the opinion of the United States Courts of Appeals for
    the Ninth Circuit in Living Designs, Inc. v. E.I. Dupont de Nemours and Company, 
    431 F.3d 353
    (9th Cir. 2005), Plaintiff claims that “considerations such as peer review and error rate are simply
    inapplicable to experience-based testimony.” Pl.’s [235] Mem. at 13 n.11. To the extent Living
    Designs and its precursors in the Ninth Circuit stand for such a broad proposition, it is plainly
    contrary to the instructions of the United States Supreme Court. Those instructions are clear:
    “[t]oo much depends upon the particular circumstances of the particular case at issue” to rule out
    certain factors identified in Daubert for “subsets of cases categorized by category of expert or by
    kind of evidence.” Kumho Tire, 526 U.S. at 150. “[S]ome of Daubert’s questions can help to
    evaluate the reliability even of experience-based testimony,” including the question of how often
    an “expert’s experience-based methodology has produced erroneous results.” Id. at 151.
    22
    of her extensive and impressive career, there is no evidence in the record indicating how good
    she was at making such judgments. Roughly speaking, how often did Roberts’ predictions turn
    out to be correct? When incorrect, how often were they “in the ballpark” and how often did they
    deviate significantly from the sentence actually imposed? These questions, which are left
    unanswered in the record before the Court, are the sort of questions one would expect to be
    addressed where a party intends to call a witness to make a predictive judgment like the one at
    issue here, even when that judgment is primarily based on the expert’s experience and not a more
    rigorous scientific or technical inquiry.16 By this, the Court does not intend to suggest that
    Plaintiff was somehow obligated to establish the reliability of Roberts’ methodology to a
    scientific or statistical certainty; even generalized evidence about how often Roberts’
    methodology produces erroneous results might very well have sufficed in this case. However,
    the record created by the parties in this case is devoid of any such evidence. At best, the record
    suggests that Roberts’ powers of prediction improved as her career progressed. See Tr. of
    Daubert Hr’g at 36-37, 55. This evidence does not provide the Court with any metric, even a
    16
    Simo v. Mitsubishi Motors North America, Incorporated, 245 F. App’x 295 (4th Cir.
    2007), an unpublished and non-precedential opinion in which the United States Court of Appeals
    for the Fourth Circuit upheld the trial court’s discretionary admission of expert testimony
    concerning the earnings a soccer player likely would have earned as his career progressed, is not
    to the contrary. Unlike Roberts, the expert in Simo engaged in a specific comparative analysis,
    “not[ing] as a point of comparison the salaries of eight then-current or former players.” Id. at
    300. Moreover, unlike Roberts, the expert in Simo did not predict a precise outcome, but rather a
    wide range of outcomes. His estimate covered a broad range from $3 million to $10 million, and
    he explained that his projection encompassed “‘a range of averages,’ rather than a precise
    prediction.” Id. at 301. Plaintiff also relies heavily on the United States Court of Appeals for the
    District of Columbia Circuit’s opinion in United States v. Mejia, 
    448 F.3d 436
     (D.C. Cir. 2006),
    cert. denied, 
    549 U.S. 1137
     (2007). The Court fails to see the comparison. In Mejia, the Court
    of Appeals upheld the trial judge’s admission of expert testimony from a law enforcement agent
    as to the use of “code phrases” employed by drug traffickers. 
    Id. at 448
    . The case did not
    involve anything remotely akin to the sort of predictive judgment offered by Roberts in this case.
    23
    rough and non-scientific metric, to probe the reliability of Roberts’ predictive methodology. In
    the end, Roberts’ “bald assurance of validity is not enough” for this Court. Daubert v. Merrell
    Dow Pharm., Inc., 
    43 F.3d 1311
    , 1316 (9th Cir.), cert. denied, 
    516 U.S. 869
     (1995).17 On this
    record, Plaintiff has failed to satisfy the Court that Roberts’ opinion that a reasonable judge
    would likely have sentenced Gaither to probation is “the product of reliable principles and
    methods.” FED . R. EVID . 702.
    iii.    “Reliably Applied”
    Nor is the Court satisfied that Roberts’ methodology has been “reliably applied . . . to the
    facts of the case,” FED . R. EVID . 702, to yield her opinion that a “reasonable judge” likely would
    have sentenced Gaither to probation. As an initial matter, the Court harbors no small amount of
    doubt that such a methodology could ever reliably produce such a precise prediction. Roberts’
    predictive methodology is meant to duplicate the “methodology” used by sentencing judges. But
    that methodology, to the extent it may even be characterized as such, is fact-intensive, multi-
    faceted, open-ended, and discretionary. Indeed, the courts of the District of Columbia recognize
    that two jurists, even when presented with the same set of facts, may reach different outcomes
    when “the discretionary, virtually non-reviewable act[,] of sentencing takes place.” Belton v.
    17
    Further, whether a “method is generally accepted” in the community may be relevant
    in evaluating experience-based testimony. Kumho Tire, 526 U.S. at 151. Despite Plaintiff’s
    assertions to the contrary, there is no basis in the record to conclude that Roberts’ predictive
    methodology has gained “general acceptance” in the community. Daubert, 
    509 U.S. at 594
    .
    While Plaintiff may be correct that sentencing judges use a similar “methodology,” they do not
    use it for the same purpose—that is, to make a predictive judgment about what sentence will be
    imposed in a given case. To put in plainly, a sentencing judge decides what sentence is
    warranted in a particular case; her task is prescriptive and not predictive. Unlike Roberts, the
    sentencing judge is not asked to make a guess about what another judge, vested with similarly
    broad discretion, might do if presented with an analogous case.
    24
    United States, 
    581 A.2d 1205
    , 1212 (D.C. 1991). What is an appropriate sentence in a particular
    case? In the District of Columbia, as elsewhere, “reasonable men may and do differ on the
    subject.” Foster v. United States, 
    290 A.2d 176
    , 179 (D.C. 1972).18 To put it another way,
    reasonable minds could apply the same “methodology” as Roberts and end up with two different
    and equally valid outcomes. See also Tr. of Daubert Hr’g at 75-76, 84 (conceding that judges
    could exercise their discretion differently).
    More to the point, Roberts’ testimony at the Daubert hearing about how she applied her
    methodology to Gaither’s case was replete with generalities. She repeatedly opined that certain
    facts pertinent to Gaither’s criminal case would be “critical,” “significant,” or a “huge plus” in
    sentencing, while others would merit “some consideration” or would not be “dealbreakers.”
    Framed in such generalized and non-specific terms, the Court has no basis to meaningfully assess
    whether Roberts has reliably applied her methodology to predict that a “reasonable judge” would
    have sentenced Gaither to probation. In the final analysis, it is not really clear what weight
    Roberts herself applied to each factor, let alone why a “reasonable judge” would do the same.
    Plaintiff’s reliance on a series of cases, none of them binding on this Court, addressing
    the propriety of expert testimony on the “reasonable judge” in legal malpractice actions, is
    misplaced. See Pl.’s [235] Mem. at 20. As the District observes, in legal malpractice actions, the
    jurors’ job is to put themselves in the place of the trier of fact in the prior legal action and to
    determine “what the result should have been”—that is, to hold a “trial within a trial.” In re
    DeAtley Litig., No. CV-06-0278-JLQ, 
    2008 WL 375086
    , at *6 (E.D. Wash. Feb. 11, 2008). The
    18
    That observation is especially true where, as here, there was no mandatory minimum
    sentence. See Dantzler v. United States, 
    696 A.2d 1349
    , 1359 (D.C. 1997) (“Where no
    mandatory minimum applies, sentencing decisions are quintessentially discretionary.”).
    25
    goal is not to predict what a particular trier of fact would have done as a matter of historical fact
    or hypothesis. That fiction, which allows the jury to substitute its judgment for another trier of
    fact, does not apply in this context. Here, “the question is not what Mr. Gaither should have
    earned, but rather what he would have earned, a determination that depends in part on what
    sentence he would have received, not what sentence the jury believes he should have received.”
    Def.’s [246] Mem. at 18.
    Plaintiff also relies upon a series of cases in which a judge expressed some level of
    willingness to hear expert sentencing testimony before sentencing a criminal defendant or
    making a determination concerning release on bail. See Pl.’s [235] Mem. at 16-17. These cases,
    none of which are binding on this Court, are inapposite for myriad reasons, but only one need be
    mentioned here: the Federal Rules of Evidence, and by extension the entire inquiry at issue here,
    do not apply in such proceedings. See FED . R. EVID . 1101(d)(3). In the end, the authorities cited
    by Plaintiff simply are not apposite.
    The Court’s conclusion remains the same even after taking into account the historical
    sentencing data that Roberts reviewed in rendering her opinion. See Pl.’s [235] Mem. at 1
    (claiming that “the historical sentencing data . . . shows that Ms. Roberts’ applied her method
    reliably because this data strongly supports a conclusion that probation (or a similarly short
    sentence) was likely.”). Strictly speaking, this evidence does not directly verify the reliability of
    Roberts’ predictive methodology, which is based on her application of a multi-factored,
    discretionary balancing test to the facts of a particular case. Rather, as Roberts and Plaintiff
    suggest, the evidence at best “corroborates” or “boosts” her bottom-line opinion that Gaither
    likely would have been sentenced to probation had he survived. Id. at 11; see also Tr. of Daubert
    26
    Hr’g at 21 (stating that the historical data “confirmed the opinion that [Roberts] initially arrived
    at”). The historical data indicates that, between January 1, 1996 and June 30, 2003, 52% of
    individuals charged with the same offense as Gaither and falling in the same criminal history
    category received probation. See App’x: Historical Data for Drug Grid (“Historical Data
    App’x”), ECF No. [235-11], at 1. Meanwhile, 48% of those individuals were sentenced to some
    period of incarceration.19 Id. But Plaintiff does not claim that Roberts (or, for that matter,
    anyone else) ever looked behind the data to determine the composition of these groups—that is,
    to determine how the factual circumstances of the criminal defendants behind the raw data
    coincide with the actual sentences imposed. Without that connection, there is an unacceptable
    analytical disconnect between Roberts’ opinion, her predictive methodology, and the historical
    data. Stated differently, there is nothing in the data, or Roberts’ analysis of the data, that reveals
    that she reliably concluded that Gaither would have fallen into the 52% of the group that received
    probation instead of the 48% who did not.
    For this reason, and for the reasons set forth above, the Court is not satisfied that Roberts’
    methodology has been “reliably applied . . . to the facts of the case,” FED . R. EVID . 702, to yield
    her opinion that a “reasonable judge” likely would have sentenced Gaither to probation in his
    criminal case.
    19
    Broken down in a different manner, 52% of the group received probation, 60.8%
    received a sentence of less than six months, 70.6% received a sentence of less than ten months,
    80.4% received a sentence of less than fifteen months, and 90.2% received a sentence of less than
    twenty-four months. See Historical Data App’x at 2.
    27
    2.      Rule 403
    As observed by the Supreme Court, an expert’s opinion “can be both powerful and quite
    misleading because of the difficulty in evaluating it.” Daubert, 
    509 U.S. at 595
    . Accordingly,
    “sometimes expert opinions that otherwise meet the admissibility requirements [of Rule 702]
    may still be excluded by applying Rule 403.” Frazier, 
    387 F.3d at 1263
    . Indeed, “Rule 403
    exclusion based on unfair prejudice is particularly important in the case of expert evidence.”
    U.S. ex rel. Miller v. Bill Harbert Int’l Constr., Inc., 
    608 F.3d 871
    , 895 (D.C. Cir. 2010), cert.
    denied, __ U.S. __, 
    131 S. Ct. 2443
     (2011). In this case, even assuming, arguendo, that Roberts’
    proffered testimony would meet the requirements of Rule 702, the Court would exercise its
    discretion and conclude that whatever probative value such testimony would have would be
    “substantially outweighed” by “a danger of unfair prejudice . . . [and] misleading the jury.” FED .
    R. EVID . 403. At the very best, the methodological foundation for Roberts’ proffered opinion
    that Gaither would be sentenced to probation is “slender,” and the danger that the jury would
    assign such testimony talismanic significance is too great. Frazier, 
    387 F.3d at 1263
    .
    In sum, the Court finds that Plaintiff has failed to show that Roberts’ opinion that a
    “reasonable judge” would have sentenced Gaither to probation is “the product of reliable
    principles and methods” that are “reliably applied . . . to the facts of the case.” FED . R. EVID .
    702. Alternatively, the Court finds that whatever probative value such testimony would have
    would be “substantially outweighed” by “a danger of unfair prejudice . . . [and] misleading the
    jury.” FED . R. EVID . 403. Accordingly, the Court shall preclude Roberts from testifying as to
    28
    how a “reasonable judge” would have sentenced Gaither.20
    D.      Roberts Can Provide Generalized Testimony About the Factors that a Judge
    Might Take into Account When Sentencing a Criminal Defendant
    Despite the foregoing, the Court agrees that the jury will need some guidance in
    determining what sentence Gaither likely would have received in order to calculate Plaintiff’s
    claimed compensatory damages, should they ever need to reach that question. Laypersons are
    unlikely to know the factors that judges are likely to consider in sentencing and, absent such
    testimony, the jury in this case would have little at its disposal to evaluate what sentence within
    the wide range of possible sentences Gaither might have received. The Court declines to cast the
    jury adrift in a sea of speculation.
    In this regard, the Court finds that Roberts can testify, in general terms, as to the factors
    that a judge might take into account in the course of sentencing a criminal defendant (e.g., the
    nature of the offense, prior criminal history, whether the offender pleads guilty or is convicted at
    trial, social and family history, employment history, ties to the community, etc.). See FED . R.
    EVID . 702 advisory committee’s note (2000 amends.) (recognizing that it might “be important in
    some cases for an expert to educate the factfinder about general principles, without ever
    20
    The problems with Roberts’ testimony would not be remedied if Roberts were to
    hypothetically soften her opinion that Gaither would have received probation to an opinion that
    “a sentence from probation to two years for Mr. Gaither was highly probable,” which Plaintiff
    asserted as a fallback position far too late in these proceedings. Pl.’s [235] Mem. at 25. While
    such an opinion might be more consistent with the historical sentencing data, there would still be
    insufficient support in the record to satisfy the Court that Roberts’ opinion would be “the product
    of reliable principles and methods” that are “reliably applied . . . to the facts of the case.” FED . R.
    EVID . 702.
    29
    attempting to apply these principles to the specific facts of the case.”).21 In addition, Roberts may
    respond to appropriate hypothetical questions designed to elicit an opinion as to whether certain
    factors would be a positive or negative consideration in sentencing. See Estate of Carey by
    Carey v. Hy-Temp Mfg., Inc., 
    929 F.2d 1229
    , 1235 n.2 (7th Cir. 1991) (“[E]xpert witnesses may
    be competent to give opinions based on hypothetical facts even though a foundation that the
    expert has personal knowledge of those facts has not been laid.”) (citation omitted). For
    example, Plaintiff’s counsel may ask Roberts whether a criminal defendant’s voluntary
    cooperation in a grand jury investigation is likely to be viewed as a positive factor in determining
    the defendant’s ultimate sentence. However, the use of such hypothetical questions shall be
    conditioned upon Plaintiff’s ability to lay a proper foundation connecting the hypothetical
    scenarios to the actual facts of this case through other evidence or witnesses.
    Meanwhile, the Court emphasizes that Roberts’ testimony cannot stray into the following
    areas: (1) her opinion of the sentence that Judge Kramer or a “reasonable judge” would have
    imposed in Gaither’s criminal case; (2) her opinion of how Judge Kramer was situated vis-à-vis
    the “reasonable judge”; (3) her opinion of how a judge would allocate the weight between certain
    factors (e.g., an opinion that a judge would consider a criminal defendant’s successful
    participation in a drug rehabilitation program as more significant than subsequently testing
    positive for drug use in violation of the defendant’s terms of release); and (4) her interpretation
    of Judge Kramer’s, counsel’s, or the probation officer’s conduct or statements in Gaither’s
    21
    “For this kind of generalized testimony, Rule 702 simply requires that: (1) the expert
    be qualified; (2) the testimony address a subject matter on which the factfinder can be assisted by
    an expert; (3) the testimony is reliable; and (4) the testimony ‘fit’ the facts of the case.” FED . R.
    EVID . 702 advisory committee’s note (2000 amends.).
    30
    criminal case (e.g., the reasons why Judge Kramer may have attended Gaither’s graduation from
    a drug rehabilitation program).
    With those provisos, in an exercise of its broad discretion, the Court shall permit Roberts
    to testify, in general terms, as to the factors that a judge might take into account in the course of
    sentencing a criminal defendant and to respond to appropriate hypothetical questions designed to
    elicit an opinion as to whether certain factors would be a positive or negative consideration in
    sentencing, leaving to the jury the task of determining which factors best fit the facts of this case.
    See Miller, 
    608 F.3d at 895
     (upholding the trial judge’s allowance of expert testimony describing
    generic economic principles, leaving the trier of fact to determine which scenario best fit the facts
    of the case).
    E.      Plaintiff’s Motion to Supplement Shall Be Denied
    In her [236] Motion to Supplement, Plaintiff seeks leave to supplement Roberts’ written
    report to make reference to additional materials supporting Roberts’ proffered opinion that a
    reasonable judge likely would have sentenced Gaither to probation—materials that Plaintiff
    claims to have discovered since the Court held the Daubert hearing, including a Presentence
    Investigation Report and transcripts of hearings before Judge Kramer. In her proposed
    supplemental written report, Roberts references the additional materials as supporting “additional
    mitigating facts.” Suppl. Roberts’ Rep. at 3. Her underlying opinion, and accompanying
    methodology, remain fundamentally the same as in her original written report. See id. at 1. The
    Court has carefully considered these additional materials, and the corresponding changes made in
    Roberts’ proffered supplemental report, and finds that they would not alter the Court’s decision
    even if supplementation were permitted. Most notably, like the historical sentencing data
    31
    Roberts relied upon previously, these additional materials at best corroborate or bolster Roberts’
    underlying conclusion; they do not satisfy the Court that her opinion that a “reasonable judge”
    would have sentenced Gaither to probation is “the product of reliable principles and methods”
    that are “reliably applied . . . to the facts of the case.” FED . R. EVID . 702. At the same time, the
    additional materials are specific to the facts of Gaither’s case, and are therefore irrelevant to the
    generalized testimony about sentencing factors that the Court has allowed. Accordingly,
    Plaintiff’s [236] Motion to Supplement shall be DENIED because consideration of the proposed
    supplemental report would not alter the Court’s conclusion about the proper scope of Roberts’
    testimony at trial.22
    V. CONCLUSION AND ORDER
    The Court has considered the remaining arguments tendered by the parties and has
    concluded that they are either without merit or need not be addressed in light of the basis for the
    Court’s decision. Therefore, and for the reasons set forth above, it is, this 19th day of December,
    2011, hereby
    ORDERED that Roberts is PRECLUDED from testifying as to (1) her opinion of the
    sentence Judge Kramer likely would have imposed in Gaither’s criminal case, (2) her opinion
    that Judge Kramer was a “reasonable judge,” “down the middle,” and “not an outlier” in
    sentencing, and (3) her opinion as to how a “reasonable judge” would have sentenced Gaither.
    However, Roberts may testify, in general terms, as to the factors that a judge might take into
    22
    Parenthetically, the Court observes that Plaintiff and Roberts offer a speculative
    interpretation of the additional materials and, in particular, Judge Kramer’s statements on the
    record during proceedings in Gaither’s criminal case. However, no one claims that Roberts has
    an expertise in divining Judge Kramer’s state of mind.
    32
    account in the course of sentencing a criminal defendant and respond to appropriate hypothetical
    questions designed to elicit an opinion as to whether certain factors would be a positive or
    negative consideration in sentencing. Accordingly, Magistrate Judge Kay’s [120] Memorandum
    Order is AFFIRMED in relevant part.
    It is FURTHER ORDERED that Plaintiff’s [236] Motion to Supplement is DENIED.
    SO ORDERED.
    /s/
    COLLEEN KOLLAR-KOTELLY
    United States District Judge
    33