So - DH and I just finished episode 7 of the docu-series. I'm addicted.

I'm going to try to be vague - but there may be some spoilers so stop reading if you arent thru episode 7.

If you were a juror - and an FBI agent says "I found no traces of that chemical and therefore conclude that the blood could not have come from the vile" do you take that as an ABSOLUTE? Do you 100% think that means the blood could not have come from the vile? No reasonable doubt?