Well, sure, but in general this is never 'knowingly' -- technicians and people working in the lab are trained on methods, told the methods are sound, and then e

Well, sure, but in general this is never 'knowingly' -- technicians and people working in the lab are trained on methods, told the methods are sound, and then execute the methods and present them in court as trained. It is the methods people/higher ups at the crime labs who are really at fault here.