Originally Posted by
OldGoat
What evidence do you have that armed robbers are inclined to bring WEI on airplanes? None?
Re-read what I wrote. What I said is that somebody who's shown they value money over lives is more likely to agree to be paid to bring something on a plane than somebody who has
not shown that. I don't think that's the least bit controvercial.
Many people that did great harm over the years were well-known to the government. Aldrich Ames is one. There are many others. They are all examples of why pre-formed opinions do not support risk estimates.
We're talking probabilities here. Obviously, there are people who have security clearances who've used them for espionage, but that doesn't mean that there's no purpose in doing investigations: they lower the probability that people given classified information will abuse it.