[tenacious_tuna]

> Now the ones to avoid move around and it's all too likely that a newcomer is such a person.

This seems a wild generalization to make, though I guess "be suspicious of newcomers" is a little biologically hardwired. What's your epistemology for believing "newcomers" are "the ones to avoid"?

[LorenPechtel]

The problem is the bad guys move around a lot more than the good guys.

[tenacious_tuna]

That's not an explanation, that's a restatement of the claim.