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Digital Evidence
Welcher Aperture PowerPoint Presentation (Ex. 188)
Welcher's 141-slide presentation covering TechStream, photogrammetry, inspections and biomechanics, including his original placement of event 11622 at 12:31:38–12:31:43 on the Lexus clock.
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The primary demonstrative exhibit for all three prongs of Welcher's direct testimony. Both Alessi and DiSogra used specific slides on cross-examination to challenge Welcher's timeline reconstruction — including his use of end-of-recording rather than trigger time — and to argue that the underlying data does not indicate whether a collision occurred.
A 141-slide PowerPoint presentation by prosecution expert Dr. Judson Welcher covering TechStream data analysis, photogrammetric analysis, vehicle inspections, and biomechanical testing. Slide 33 displayed TechStream trigger event data showing shift position, vehicle speed at 23.61 mph, and acceleration at 74%. Welcher originally placed the 11622 event at 12:31:38–12:31:43 on the Lexus clock.