I'm surprised they'd even need to say that, let alone people who heard it were just learning it. I would imagine the overwhelming majority of cases don't involv

I'm surprised they'd even need to say that, let alone people who heard it were just learning it. I would imagine the overwhelming majority of cases don't involve forensic evidence. I've only had close involvement in a handful of cases that resulted in a conviction, but none involved forensic evidence. In one they took fingerprints (and the handle to our cash drawer, which they never returned), but that didn't result in a conviction.