Quote Originally Posted by William F. Owen View Post
How do you find out if someone is a secret communist? Profiles are more a search tool, than indicative of any form of prediction. Profiles cannot tell you who is a terrorist and who is not. Profiles just fine tune the search.

To quote a training manual I saw once, "A profile without a subject is like key without a door."

That is exactly what they are, a search tool. It was designed to be used after a crime(s)to find the person who did it when you had little or nothing else to go on but the suspects behavior.