Cross Judson Welcher Robert Alessi
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Defense attorney Robert Alessi conducts an extensive cross-examination of Dr. Judson Welcher across the full trial day. Alessi opens by establishing principles of forensic science, the scientific method, and confirmation bias, then questions Aperture's financial arrangement with the Commonwealth, including a contract described as authorizing $325,000 and counsel's assertion that $44,510 had already been paid; Welcher said he was not aware of payments and characterized his contract understanding as nonlegal. Alessi highlights that Welcher's PowerPoint presentation was modified during the trial, including a May 13 alternative-path slide added after additional information was provided; Welcher said the slide was removed before he presented. The core technical challenge focuses on Welcher's failure to perform Newton's second law force calculations for the arm injuries despite doing so for the head. Alessi walks Welcher through F=MA calculations showing 2,188 pounds of force at 20 mph impact, then examines the forearm and hand fracture-threshold discussion without a case-specific arm-force analysis. Alessi also challenges the spoiler-to-eye height comparison by noting Welcher failed to account for a 4-inch berm, the lack of any bone fractures in O'Keefe's arm or hand, and the lack of written notes documenting rejected arm-orientation variants, while Welcher described other hypothesis testing. The session concludes with Alessi questioning the provenance of images in Welcher's presentation: Welcher said the drone imagery came from a folder named CARS-TRP.Joe Paul but was not in Paul's report, and that his Google Maps chart was separately derived despite both using Google Maps.