actually, the PCA mentions a Vans like print, diamond-shaped pattern, and those are very distinctive, and of course, almost any shoe can be IDd by the FBI
and to clarify: we don't even know the car is his much less that he drove it, so to assume those things would require that we also assume he was potentially wearing those distinctive-soled shoes. As to what shoes he actually owns, obv IDK and the search warrant receipts don't specify Vans (WA doesn't even list shoes taken) and PA lists multiple boots and New Balance shoes)
Bryan Kohberger is accused of killing University of Idaho students Kaylee Goncalves, Madison Mogen, Xana Kernodle, and Ethan Chapin.
www.inquirer.com
A detective working a missing persons case undoubtedly knows how to make the most of databases such as the Combined DNA Index System (CODIS) and the Integrated Automated Fingerprint Identification System (IAFIS), but does he or she know how to investigate a paint chip, a tire track, an ink...
nij.ojp.gov
Also, the DNA on the sheath is touch DNA and
@BeginnerSleuther has shared links re its fallibility. The WA state search warrant (see page 6 application for search warrant asks that the DNA be excluded as evidence supporting probable cause. so jmo imo not what LE considered the smoking gun, and Imo jmo it will be interesting to see how that plays out in court.
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https://int.nyt.com/data/documenttools/search warrant for bryan kohberger apartment/ddb059f6cc8e24c1/full.pdf