There are several options here:
(1)Go back and invest a little time reading previous threads where this has been discussed over and over, explained in intricated detail, and proven beyond a shadow of a doubt.
It is something called courtesy of trying to understand what has been discussed so you don't force others to re-educate every person that comes to the thread.
I would be happy to take time to explain all the instances (fingerprints, hairs, fibers,etc) where police testified in court that they did not bother to identify this item or that, or id prints, or even take prints from certain items.
Problem is that I know you have been on these threads lurking and replying, so you have read this information just like the rest of us.
That you have read it and choose to play dumb and ignore it means that me telling you would do no good, so I choose not to waste my time
If you are serious about learning, go back and read the threads. There are links, or we can direct you.
THis is my favorite qoute:
"I understand your problem.
I'll be glad to help you out.
Which way did you come in?"
Don't be silly. Point me to any article ... ANY PROOF AT ALL that no time was spent on any other person or persons. Your answer was vague in the extreme. Proof.