the approach they use will never, ever go wrong or cause unintended effects there's a still a problem.

there is a margin of error in everything. obviously that's a risk they accept. you're just waiting on them to die so you can say "i told you so!"? even policemen die on the job, are corrupt, etc..

then other less careful groups can also use it.

that's on them. but for the most part, 99% of pred catchers are not getting their top blown off by a redneck with a sawed-off just because he doesn't want to get caught.

There are of instances of these groups confronting innocent people that did absolutely nothing wrong.

the cops have imprisoned and executed innocent people

a lawyer would have a very good chance of challenging it.

even when we leave SA cases to the cops, the perps still get away a lot

I'm willing to change my mind.

what incentive do i have to change your mind that is of value to me?

Can you link to any reputable, scientific study/source

why would i need to? if you believe my claim is nonsense, then that then you are free to so.