All MOO
I don't know how anyone could believe that a sheath laying under a victim for over 8 hours somehow ONLY has a few microscopic skin cells from one person. It's simply not believable in my opinion.
I just hope there is body cam video of LE finding/discovering the 'placed' sheath. I say placed b/c that's what the PCA says.
All MOO
I don’t know how anyone can expect the sheath to contain victim DNA.
First, we don’t even know if it made contact with the victim’s skin. Secondly, there’s no guarantee it would contain DNA even if it did.
One thing that increases the odds of DNA transfer, is the application of pressure on an object, you know, like the snap to a sheath.
Are you seriously suggesting that police or someone else randomly planted a knife sheath at the scene? That’s not just conspiracy theory territory- that’s verging on grounds for involuntary commitment.
From ChatGTP:
In forensic science, a shedder is someone who readily transfers their DNA onto objects through touch. Some people naturally shed more skin cells, oils, or sweat, making it easier to leave behind trace DNA.
Several factors influence shedding:
Biology: Some individuals naturally shed more skin cells than others.
Contact Duration & Pressure: Longer or firmer contact increases DNA transfer.
Skin Condition: Dry or flaky skin tends to shed more cells.
Environment: Humidity, friction, and surface type affect DNA retention.
Forensic experts consider shedding levels when analyzing touch DNA, as strong shedders are more likely to leave usable samples.