Ha. So it turns out that because of all the CSI and Law & Order jurors are watching these days they think they know a whole lot more about forensics and criminal investigations than they really do:
Prosecutors in the United States are now spending much more time explaining to juries why certain kinds of evidence are not relevant. Prosecutors have even introduced a new kind of witness–a “negative evidence” witness–to explain that investigators often fail to find evidence at a crime scene.
Apparently it cuts both ways, though, as criminals are also watching these shows and learning some tricks to cover their tracks. I love TV.