On July 27, 2020, a divided (5-2) Pennsylvania Supreme Court  issued a significant opinion defining the trial court’s role in determining the admissibility of an expert’s opinion testimony in Pennsylvania. The majority’s opinion limited the trial court’s role to solely determining whether the expert had applied “generally accepted methodology” in reaching his/her opinion(s), thus precluding the trial court from even examining whether the expert’s proposed opinion(s) was consistent with the studies the expert reportedly relied upon in reaching his/her opinion(s). Walsh v. Basf Corp., 2020 Pa LEXIS 3794 (Pa., Jul. 27, 2020).