dr. kobilinsky, let me start with this. know, this whole series was borne from this 2009 national academy of science report that essentially called for a complete overhaul of forensic science practices. i'm sure you saw the report. i wondered what you made of it. essentially seemed to conclude that forensic science had a junk science quality about it. >> well, sanjay, the fact is is we're living in an era of dna technology. and that is considered the gold standard for forensic evidence. and what's happened is that people are now comparing all of the other kinds of science within forensics to dna. and it just doesn't live up to that same standard. the purpose of this report is to generate more funding to do more research, to make sure that any kind of evidence that gets to the court is reliable evidence. >> yeah. and it seems like dna has certainly raised the bar. jeff, you heard this story, i'm sure, with mr. warren horinek. given the discrepancies with blood spatter analysis, as a starting point, should blood spatter evide

dr. kobilinsky, ray krone's story is absolutely heartbreaking.most people see and worry about is there could be others like him that were convicted on this sort of science that got it wrong and those people are still sitting in jail. so how much faith specifically do you have in bite mark analysis? >> bite mark is very difficult to understand because a bite on human skin -- skin is elastic. it goes through a movement when you try to pince it or bite it. you have trauma to the skin and it changes color over time. what you're doing is comparing one's dentition, a suspect's dentition to a cellulose acetate overlay on top of the skin and try to determine a common origin. it's a very difficult area. it's impression evidence. there are definitely problems with it. it's much, much too subjective. it needs to be computerized into a more objective way of looking at things and also, remember, there's no database. there are no national standards, and the big problem is you have an individual that goes to court and says i looked at that bite mark. i looked a

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