>>>What would cause us to think to check him, if we didn't already know he was a link in the chain?
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>>Because Al-Q calls him, or takes calls from him. Yes, this is a simplistic example, but you see my point.
>
>
>No I don't. If Al-Q calls him or he calls Al-Q, then he is a link.

Or guess what, some Al Qaida's member's kids call your kids, because you're distant cousins (but all the closer because of the physical distance), or you just happen to call your nephew back home to ask how are your parents, not knowing that he's become a member meanwhile.

Or worse, you are just stupid and buy into a Nigerian scheme run by a member. And all of a sudden you're financing terrorists.

There was a joke back home, about a rabbit catching a raft to cross the river. The rabbit was in quite a harry, so the raft guy ask him what's the fuss. "They're spaying bears over there!". "But you're not a bear!" "Do you think they'd give me the time to explain?"