Experts: Crime labs come with built-in bias, shifting science

Bite marks and blood spatter?
Any fan of any iteration of television’s “CSI” franchise knows full well that both can be used to easily solve crimes.
Same for tire impressions, hair comparisons, knife analysis. All those fields are science, right? And, as such, they’re inviolate and solid; sources of evidence that, when artfully described by a prosecutor in a court of law, can erase the “reasonable doubt” level of uncertainty that jurors are supposed to evict f