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S T A T E O F M I C H I G A N

C O U R T O F A P P E A L S

JASON REINEKE,

Plaintiff-Appellee,

UNPUBLISHED

January 25, 2018

v No. 331878

Wayne Circuit Court

GRAND TRUNK WESTERN RAILROAD 

COMPANY,

LC No. 14-015048-NO

Defendant-Appellant.

Before: JANSEN, P.J., and FORT HOOD and RIORDAN, JJ.

RIORDAN, J. (dissenting)

I dissent. 

Contrary to the majority, I would follow our Supreme Court’s direction that the trial 

court, and not this Court, is required to act as a gatekeeper pursuant to MRE 702 and MCL 

600.2955. Unlike the majority, I refuse to take on that duty retrospectively. As the discussion of 

the Federal circuit split on the issue reveals, infra, the question presented to the trial court was 

not so cut and dry as plaintiff, and now the majority, would have us believe. If the trial court had 

engaged in the same in-depth reasoning as the majority now does – where it considers the facts, 

methods, and science underlying the doctors’ trial testimony, and then applies the relevant law at 

issue to determine whether those opinions were reliable and, after doing that, and prior to the 

witnesses’ testimony, then declares the testimony admissible – we would have been provided 

with a reviewable record. Instead, as the record now stands, the trial court improperly shirked its 

duty to act as a gatekeeper prior to the experts’ testimony. For us to affirm the trial court, with a 

20/20 hindsight approach, is improper. Allowing the trial court to ignore and abdicate its 

gatekeeper role in a case where the jury was obviously conflicted regarding the exact issue –

causation – about which the experts’ testimonies are challenged, is not in accordance with the 

law.

Pursuant to the Federal Employers’ Liability Act (FELA), 45 USC 51 et seq., I would

vacate the trial court’s judgment, reverse the trial court’s orders permitting the expert opinion 

testimony regarding causation, and remand for further proceedings consistent with this dissent. 

I. BACKGROUND FACTS & PROCEDURAL HISTORY
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Defendant, a railroad company, employed plaintiff as a train conductor. During 

plaintiff’s course of employment, he discovered that some manual track switches and pin levers, 

which he was required to operate as part of his job duties, did not properly function. 

Specifically, some of the track switches were harder to pull than normal due to inadequate 

lubrication and some pin levers, which separated the train cars from one another, malfunctioned 

for reasons that are unclear in the record. When plaintiff confronted that malfunctioning 

equipment, he was required to use extra force, bent wrists, and irregular posture. Plaintiff 

reported that certain pin levers would jam, causing vibrations to travel through his hand and 

wrist. Over the course of a few years, plaintiff contends he developed bilateral carpal tunnel 

syndrome (CTS), which required surgery to correct. Plaintiff sued defendant under FELA, 

which is a federal statute enacted by the United States Congress “to provide a federal remedy for 

railroad workers who suffer personal injuries as a result of the negligence of their employer or 

their fellow employees.” Atchison, Topeka & Santa Fe R Co v Buell, 480 US 557, 561; 107 S Ct 

1410; 94 L Ed 2d 563 (1987).

Throughout the proceedings, defendant repeatedly challenged the expert opinion 

testimony of Dr. Manish Gupta and Dr. Steven Newman regarding causation pursuant to MRE 

702, MCL 600.2955, and Daubert v Merrell Dow Pharmaceuticals, Inc, 509 US 579; 113 S Ct 

2786; 125 L Ed 2d 469 (1993). Defendant argued that the doctors’ opinions on causation arose 

from an insufficient factual foundation and from improper diagnostic methods, rendering it 

unreliable and inadmissible. Defendant made the same argument in a motion for summary 

disposition, a motion in limine to bar the doctors’ causation opinion testimony at trial, an 

objection to the testimony immediately before it was presented to the jury, and in a motion for 

directed verdict. The trial court denied all of those motions without citation to MRE 702 or 

Daubert, and without considering any of the listed factors in MCL 600.2955. 

After completion of the trial, the jury returned a verdict in favor of plaintiff, finding that 

defendant had negligently maintained the aforementioned equipment and that plaintiff’s use of 

that equipment caused, at least in part, plaintiff’s CTS. The jury awarded plaintiff $75,000 in 

damages and attributed 45% of plaintiff’s damages to his own negligence. The trial court 

entered a judgment on that verdict and this appeal followed.

II. EXPERT WITNESS TESTIMONY

Defendant argues that the trial court abused its discretion in permitting Dr. Gupta and Dr. 

Newman to testify regarding their expert opinions on causation. I agree that the trial court 

abused its discretion by abdicating its role as gatekeeper pursuant to MRE 702, but, unlike the 

majority, I would decline defendant’s invitation to perform that duty for the trial court on appeal.

A. STANDARD OF REVIEW & GENERAL LAW

“A trial court’s evidentiary decisions, preserved for review, are reviewed for an abuse of 

discretion.” Landin v Healthsource Saginaw, Inc, 305 Mich App 519, 541; 854 NW2d 152 

(2014). “An abuse of discretion occurs when the trial court chooses an outcome falling outside 

the range of principled outcomes.” Edry v Adelman, 486 Mich 634, 639; 786 NW2d 567 (2010). 

“We review de novo questions of law underlying evidentiary rulings, including the interpretation 

of statutes and court rules.” Elher v Misra, 499 Mich 11, 21; 878 NW2d 790 (2016). “The 
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admission or exclusion of evidence because of an erroneous interpretation of law is necessarily 

an abuse of discretion.” Id.

While substantive issues in FELA cases are governed by federal law, “questions of 

procedure and evidence [are] to be determined according to the law of the forum.” Chesapeake 

& Ohio R Co v Kelly, 241 US 485, 491; 36 S Ct 630; 60 L Ed 1117 (1916); see also Hughes v 

Lake Superior & Ishpeming R Co, 263 Mich App 417, 421; 688 NW2d 296 (2004). In 

Michigan, MRE 702 and MCL 600.2955 govern the admissibility of expert scientific testimony. 

MRE 702 sets out the requirements for the admission of expert testimony, and provides:

If the court determines that scientific, technical, or other specialized 

knowledge will assist the trier of fact to understand the evidence or to determine a 

fact in issue, a witness qualified as an expert by knowledge, skill, experience, 

training, or education may testify thereto in the form of an opinion or otherwise if 

(1) the testimony is based on sufficient facts or data, (2) the testimony is the 

product of reliable principles and methods, and (3) the witness has applied the 

principles and methods reliably to the facts of the case.

Pursuant to MRE 702, the trial court must function as a gatekeeper in making decisions 

regarding the admissibility of scientific evidence and ensuring that expert testimony meets that 

rule’s standard of reliability. Gilbert v DaimlerChrysler Corp, 470 Mich 749, 782; 685 NW2d 

391 (2004), citing Daubert, 509 US 579. In addition, MCL 600.2955 provides:

(1) In an action for the death of a person or for injury to a person or 

property, a scientific opinion rendered by an otherwise qualified expert is not 

admissible unless the court determines that the opinion is reliable and will assist 

the trier of fact. In making that determination, the court shall examine the opinion 

and the basis for the opinion, which basis includes the facts, technique, 

methodology, and reasoning relied on by the expert, and shall consider all of the 

following factors:

(a) Whether the opinion and its basis have been subjected to scientific 

testing and replication.

(b) Whether the opinion and its basis have been subjected to peer review 

publication.

(c) The existence and maintenance of generally accepted standards for 

governing the application and interpretation of a methodology or technique and 

whether the opinion and its basis are consistent with those standards.

(d) The known or potential error rate of the opinion and its basis.

(e) The degree to which the opinion and its basis are generally accepted 

within the relevant expert community. As used in this subdivision, “relevant 

expert community” means individuals who are knowledgeable in the field of 

study and are gainfully employed applying that knowledge on the free market.
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(f) Whether the basis for the opinion is reliable and whether experts in that 

field would rely on the same basis to reach the type of opinion being proffered.

(g) Whether the opinion or methodology is relied upon by experts outside 

of the context of litigation.

The trial court “shall consider all of the factors listed in MCL 600.2955(1).” Clerc v 

Chippewa Co War Mem Hosp, 477 Mich 1067, 1068; 729 NW2d 221 (2007). The party offering 

the expert testimony has the burden of satisfying the preconditions established by MRE 702 and 

MCL 600.2955(1). Gilbert, 470 Mich at 781. In determining admissibility under the statutory 

standard, a court must consider the statutory factors, but not all of the facts need favor 

admissibility before the evidence may be admitted. Rather, the pertinent determination is 

whether a scientific opinion is rationally derived from a sound foundation. Chapin v A & L 

Parts, Inc, 274 Mich App 122, 127 (Opinion of the Court), 143 (METER, J., concurring); 732 

NW2d 578 (2007). “The focus, of course, must be solely on principles and methodology, not on 

the conclusions that they generate.” Daubert, 509 US at 595. 

In Craig v Oakwood Hosp, 471 Mich 67, 82; 684 NW2d 296 (2004) (emphasis added), 

the Michigan Supreme Court clarified that the trial court had an independent duty to fully 

evaluate the proposed expert testimony once challenged by an opposing party: 

Under MRE 702, the trial court had an independent obligation to review 

all expert opinion testimony in order to ensure that the opinion testimony satisfied 

. . . that it was rendered by a “qualified expert,” that the testimony would “assist 

the trier of fact,” and, under the rules of evidence in effect during this trial, that 

the opinion testimony was rooted in “recognized” scientific or technical 

principles. These obligations applied irrespective of the type of expert opinion 

testimony offered by the parties. While a party may waive any claim of error by 

failing to call this gatekeeping obligation to the court’s attention, the court must 

evaluate expert testimony under MRE 702 once that issue is raised.

Indeed, the Court, when considering a case where the trial court “did not consider the range of 

indices of reliability listed in MCL 600.2955[,]” remanded that case to the trial court to 

“complete the proper inquiry.” Clerc, 477 Mich at 1068.

B. ANALYSIS

At trial, and now on appeal, defendant challenges the expert opinion testimony by Dr. 

Gupta and Dr. Newman regarding causation, a necessary element of a FELA claim. 45 USC 51. 

See also CSX Transp, Inc v McBride, 564 US 685, 703-704; 131 S Ct 2630; 180 L Ed 2d 637 

(2011). With respect to Dr. Gupta, defendant directs this Court to testimony establishing that Dr. 

Gupta did not investigate the working conditions plaintiff complained about, i.e., Dr. Gupta did 

not know the frequency, duration, force, or posture actually required to operate the negligently 

maintained equipment. Further, Dr. Gupta could not identify any peer-reviewed study or 

experiment that linked a train conductor performing the jobs in question to the development of 

CTS, nor did Dr. Gupta specifically rule out plaintiff’s obesity, hyperglycemia, prior injuries, or 

genetics as potential causes of the CTS. Dr. Gupta professed no knowledge regarding what 
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levels of repetition, force, posture, and duration that are required to cause CTS in an individual. 

Instead, Dr. Gupta offered the conclusory opinion that plaintiff’s CTS was caused, at least in 

part, by the work duties in question based on a set of assumptions provided by plaintiff. 

Defendant moved the trial court to preclude Dr. Gupta from providing his opinion on causation 

because it did not rely on “sufficient facts or data” and was not the “product of reliable principles 

and methods.” MRE 702.

Defendant challenged Dr. Newman’s expert opinion regarding causation for similar 

reasons. Specifically, while Dr. Newman testified that he performed a differential diagnosis, 

which is an undisputed scientific method for determining causation, defendant argued that Dr. 

Newman’s explanation of the actual methods he used belied that he properly performed such a 

procedure. Dr. Newman relied solely on plaintiff’s testimony and medical records, and the 

deposition testimony of other expert witnesses. Dr. Newman did not meet with plaintiff or 

evaluate him in any manner. Further, like Dr. Gupta, Dr. Newman did not investigate the work 

site or cite any scientific literature regarding the causation of CTS. Consequently, Dr. Newman 

was not aware of the actual force, duration, frequency, and posture required to perform the 

challenged job duties. Dr. Newman’s testimony reveals that he did not rule out genetics, tobacco 

use, or obesity as potential causes of plaintiff’s CTS. Dr. Newman also stated that he did not 

rule out the possibility that the general work with properly operating equipment that plaintiff did 

every day could have also contributed to his development of CTS. Dr. Newman admitted that he 

was not aware that, beginning in 2011, plaintiff worked about half of his days as a union official, 

which did not require him to operate the malfunctioning equipment. Once again, defendant 

moved the trial court to preclude Dr. Newman from providing his opinion on causation because 

it did not rely on “sufficient facts or data” and was not the “product of reliable principles and 

methods.” MRE 702.

Federal circuit court decisions in FELA cases considering the admissibility of similar 

testimony based on Daubert and its progeny conflict. See Myers v Illinois Central R Co, 629 F 

3d 639 (CA 7, 2010); see also Brown v Burlington Northern Santa Fe R Co, 765 F 3d 765 (CA 7, 

2014); but see Hardyman v Norfolk & Western R Co, 243 F 3d 255 (CA 6, 2001). Although not 

binding, those cases could have provided relevant guidance to the trial court on this issue, see 

Kelly, 241 US at 491, should it have chosen to act as a gatekeeper.

As noted, defendant moved the trial court several times to preclude the expert opinion 

testimony of Dr. Gupta and Dr. Newman regarding causation. In so doing, defendant relied on 

the aforementioned Seventh Circuit precedent. Even in light of those repeated arguments by 

defendant and the conflicting case law on the issue, the trial court flatly refused to address the 

requirements of Michigan law regarding its gatekeeper role in determining the admissibility of 

expert opinion testimony. The record reveals that the trial court repeatedly confused the lax 

standard for proof of causation in FELA cases1 with the standard for admissibility of expert 

 1 See Consolidated Rail Corp v Gottshall, 512 US 532, 543; 114 S Ct 2396; 129 L Ed 2d 427 

(1994) (quotation marks omitted) (holding that pursuant to FELA, “the test of a jury case is 

simply whether the proofs justify with reason the conclusion that employer negligence played 

any part, even the slightest, in producing the injury or death for which damages are sought.”).
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opinion testimony under MRE 702, Daubert, and MCL 600.2955. These are separate and 

distinct inquiries. See, e.g., Hardyman, 243 F 3d 255. During the hearing on defendant’s 

motions for summary disposition, which relied, in part, on defendant’s argument that Dr. Gupta’s 

and Dr. Newman’s expert opinions on causation were not admissible, the trial court repeatedly 

stated that the issue of causation, given the low FELA standard, was a fact question for the jury. 

Despite defendant’s citation to MRE 702 and MCL 600.2955, the trial court did not consider the 

doctors’ methodologies or factual support, applied neither the Sixth nor Seventh Circuit standard 

or anything similar, and did not address any of the factors listed in MCL 600.2955.

2

The trial court had a chance to cure that error after defendant once again moved to 

preclude the testimony of the doctors on the same grounds, this time in a motion in limine. Upon 

hearing those arguments, the trial court provided the following reasoning for denying the motion 

in limine: 

But the thing is the fact of the matter remains that we’ll leave the experts 

to make their opinions and then you make your appropriate arguments to the jury, 

but the Court isn’t going to summarily not allow an expert to testify and, in this 

regard, solely on the basis that they didn’t use the catchwords. Because the fact 

that the matter remains is anybody can feed them the catchwords to use to support 

that, but the Court is going to allow them to present their testimony and, whatever 

way it comes out, then the counsel can make their appropriate arguments to the 

jury, in order to create a level of credibility as to the different experts – medical 

experts that are going to testify.

The trial court’s reasoning clearly exhibits its misunderstanding of its expert evidence gatekeeper

responsibility under MRE 702, MCL 600.2955, and Daubert. The trial court stated that the jury 

would be able to determine the credibility of the expert witnesses, which is true, but ignores, like 

the majority now does, that the Michigan Supreme Court has held that the trial court itself has 

the independent duty to determine the reliability of an expert witness’s opinion testimony before 

submitting that testimony to a jury. Gilbert, 470 Mich at 782. 

Defendant attempted once again to alert the trial court to issues with the expert witnesses’ 

opinion testimony at trial before the doctors’ depositions were played to the jury. During oral 

 2 The Seventh Circuit has held that expert opinion testimony regarding causation in similar cases 

is unreliable and inadmissible where the expert did not do an on-site work evaluation to test the 

force, frequency, duration, and posture of the complained of job duties, was not aware of any 

peer-reviewed study linking the profession in question to the development of the disease, and did 

not take active investigative steps to rule out specific possible non-work related causes. See 

Myers, 629 F 3d 639; see also Brown, 765 F 3d 765. In comparison, the Sixth Circuit permitted 

expert opinion testimony regarding causation where the experts relied on the plaintiff’s 

description of a job that involved techniques that were known risk factors for a disease, that the 

plaintiff reported no other non-work activities that would have required similar techniques, and 

that well-established, undisputed medical studies support that the disease can be caused by those 

techniques. Hardyman, 243 F 3d 255.
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argument while the jury was out of the courtroom, defendant specifically noted that plaintiff and 

the trial court, by considering the lax standard for proof of causation in FELA cases while 

deciding whether expert opinion testimony is admissible under Michigan law, were “mixing 

apples and oranges.” In response, the trial court once again refused to address any factors from 

MCL 600.2955 and held that the doctors’ were permitted to rely on hypotheticals for factual 

foundation before providing their medical opinion on causation.

Despite defendant’s repeated arguments that Dr. Gupta and Dr. Newman did not have an 

adequate factual foundation to support their alleged methodologies, along with citation to 

relevant and supportive case law showing that previous similar testimony had been ruled 

unreliable and inadmissible, the trial court refused to engage in its role as a gatekeeper under 

MRE 702, MCL 600.2955, and Daubert. Once defendant raised the issue of admissibility, the 

trial court was not permitted to avoid the application of MRE 702. Craig, 471 Mich at 82. 

Additionally, in such cases, the Legislature was clear and unambiguous when it stated 

that the trial court “shall” consider all of the factors listed in MCL 600.2955 before admitting 

expert opinion testimony. Shall means must. “The use of ‘shall’ in a statute generally indicates 

a mandatory and imperative directive.” Mich Ed Ass’n v Secretary of State, 489 Mich 194, 218; 

801 NW2d 35 (2011) (internal quotation marks omitted). Despite this clear legislative directive, 

the trial court failed to cite any of the factors listed in the statute. Further, the trial court’s 

reasoning did not address any “scientific testing[,] replication,” or “peer review[ed] 

publication[s]” regarding the proffered expert opinions. MCL 600.2955(a) and (b). The trial 

court did not consider whether there were “generally accepted standards governing the 

application and interpretation” of the methodology used by the doctors, nor did the trial court 

consider “whether the opinion and its basis [were] consistent with those standards.” MCL 

600.2955(c). The trial court did not comment on any “known or potential error rate,” MCL 

600.2955(d), whether and to what extent the doctors’ expert opinions were “generally accepted 

within the relevant expert community,” MCL 600.2955(e), whether other experts would have 

relied “on the same basis to reach the type of opinion being proffered,” MCL 600.2955(f), nor 

whether “experts outside the context of litigation” would use the same methodology to reach the 

same opinion, MCL 600.2955(g). Instead, the trial court reasoned that the doctors could “present 

their testimony and, whatever way it comes out, then the counsel can make their appropriate 

arguments to the jury, in order to create a level of credibility as to the different experts[.]” The 

clear and unambiguous mandate of MCL 600.2955 and MRE 702 requires more than that.

In light of the trial court’s abdication of its role as gatekeeper, our Supreme Court has 

held that the proper remedy is to remand to the trial court to properly perform its duty. Clerc, 

477 Mich at 1068. For us to adopt the role meant for the trial court and decide in hindsight

whether the doctors’ testimonies were sufficiently reliable to be admissible is error, because 

“[t]he plain language of [MCL 600.2955] establishes the Legislature’s intent to assign the trial 

court the role of determining, pursuant to the Daubert criteria, whether proposed scientific 

opinion is sufficiently reliable for jury consideration.” Greathouse v Rhodes, 242 Mich App 

221, 238; 618 NW2d 106 (2000) (emphasis in original), rev’d on other grounds 465 Mich 885 

(2001).

This Court’s analysis, however, does not end with the trial court’s abdication of its 

gatekeeper role because “any error in the admission or exclusion of evidence will not warrant 
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appellate relief ‘unless refusal to take this action appears . . . inconsistent with substantial 

justice,’ or affects ‘a substantial right of the [opposing] party.’ ” Craig, 471 Mich at 76, quoting 

MCR 2.613(A) and MRE 103(a). This Court has held that a party’s substantial rights are 

affected where the outcome of the trial would have changed. Hurt v Michael’s Food Ctr, Inc, 

220 Mich App 169, 177-178; 559 NW2d 660 (1996). As discussed, had the trial court performed 

its gatekeeper duty, it may or may not have determined that the expert witnesses’ opinion 

testimony regarding causation was admissible. Defendant insists that without the expert 

testimony, plaintiff failed to provide sufficient proof of causation to survive summary disposition 

and directed verdict. I do not believe that plaintiff’s case required expert opinion testimony on 

causation to survive summary disposition and directed verdict to reach a jury.

3 However, “[t]o 

say that the evidence is sufficient to create a jury question does not mean, of course, that a jury 

will ultimately find that [defendant’s] negligence caused [plaintiff’s] injuries under the 

preponderance standard applicable when the case is submitted to the jury.” Aparicio v Norfolk & 

Western R Co, 84 F 3d 803 (CA 6, 1996), abrogated on other grounds by Reeves v Sanderson 

Plumbing Prod, Inc, 530 US 133; 120 S Ct 2097; 147 L Ed 2d 105 (2000). The question 

remains, therefore, whether the jury hearing the doctors’ testimony regarding causation affected 

a substantial right of defendant. See Craig, 471 Mich at 76.

As stated, the jury’s decision regarding causation may, or may not, have changed if it had 

not heard testimony from Dr. Gupta and Dr. Newman regarding their expert opinions that the job 

duties performed with the malfunctioning equipment caused plaintiff’s CTS. But, the trial 

court’s failure in the instant case is particularly troublesome because “[c]areful vetting of all 

aspects of expert testimony is especially important when an expert provides testimony about 

causation.” Gilbert, 470 Mich at 782. The Michigan Supreme Court has expressed concern that 

“ostensibly legitimate data may serve as a Trojan horse that facilitates the surreptitious advance 

of junk science and spurious, unreliable opinions.” Id. at 783. Next, the jury’s verdict in the 

present case revealed that its decision on causation was not without some doubt. Specifically, 

the jury’s special verdict form declared that plaintiff’s own negligence caused 45% of his injury. 

It is reasonable to expect that the same jury, considering the case without the doctors’ expert 

medical opinions on causation, may have decided the issue differently. This is especially true 

due to the Michigan Supreme Court’s heightened concern about expert opinion testimony on the 

issue of causation. See id. 

Given that the correction of the trial court’s error possibly could have led to a change in 

the trial’s outcome, I see no option but to vacate the judgment of the trial court and remand for a 

new trial after the trial court properly performs its role as gatekeeper. See Hurt, 220 Mich App 

at 177-178.

 3 See Tufariello v Long Island R Co, 458 F 3d 80, 88 (CA 2, 2006) (internal quotations omitted) 

(holding that expert testimony regarding causation is not required in FELA cases where “there is 

a generally understood causal connection between physical phenomena . . . and the alleged injury 

that would be obvious to laymen.”); see also Hardyman, 243 F 3d at 269 (holding that expert 

opinion testimony regarding causation was not required in a FELA case involving CTS). 
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III. CONCLUSION

The trial court abused its discretion when it entirely abdicated its independent duty to act 

as the gatekeeper in the instant case. See Craig, 471 Mich at 82. Had the trial court found that 

evidence inadmissible, the jury’s decision regarding causation may have differed. Hurt, 220 

Mich App at 177-178.

4

Contrary to the suggestion by the majority, I do not believe that it is a foregone 

conclusion that Dr. Gupta’s and Dr. Newman’s expert opinion testimony regarding causation is 

inadmissible, unreliable, or “masquerading as science.” Instead, I would remand for the trial 

court to perform its duty as gatekeeper in the first instance, as statutory and binding case law 

requires, and allow it to make that decision. MRE 702; MCL 600.2955; Clerc, 477 Mich at 

1068. In ignoring these mandates, the majority has deigned to take that role for itself and 

provide post-hoc rationale for admitting the expert opinion testimony based on an incomplete 

and insufficient record to do so.5

Thus, I would reverse the trial court’s orders denying defendant’s motions to preclude the 

expert opinion testimony of Dr. Gupta and Dr. Newman regarding causation, vacate the 

judgment of the trial court on the jury’s verdict, and remand for the trial court to perform its role 

as gatekeeper and for further proceedings consistent with this opinion. 

/s/ Michael J. Riordan 

 4 Given that I would vacate the judgment and remand for the trial court to consider the expert 

opinion testimony of Dr. Gupta and Dr. Newman, the remaining issues would be rendered moot. 

After properly exercising its role as gatekeeper, the trial court would then consider any motion 

for summary disposition brought by defendant, with or without the benefit of the expert witness 

testimony, motion for a new trial, or a motion for directed verdict. The trial court would also 

then consider what jury instructions are proper given the evidence and argument elicited at that

trial.

5 I am perplexed by the majority’s suggestion that I have somehow erred in failing to cite Dixon 

v Grand Trunk Western R Co, 259 F Supp 3d 702 (ED Mich, 2016). First, the United States

District Court’s decision in Dixon, in relevant part, relies almost entirely on Hardyman, 243 F 3d 

255, which I cite extensively for the proposition that a Federal Circuit split exists regarding 

treatment of expert witness opinion testimony in cases similar to the present one. Therefore, I 

am not surprised that the Eastern District of Michigan Court in Dixon, being bound by the Sixth 

Circuit’s decision in Hardyman, performed its gatekeeper role correctly, albeit while ruling on a 

motion for summary judgment. Second, while this Court and the trial court are not bound by 

Hardyman or Dixon, I would note that the trial court and the majority would be well-served to 

use the Dixon opinion as a model for the proper role of a trial court as a gatekeeper for expert 

witness testimony.