A great interview about how safe we are from terrorism....

http://www.msnbc.msn.com/id/4549661/

"If you think of the number of situations where people gather en masse—whether they are public transportation or stadiums or theaters or shopping malls or monuments—you come up with a list of hundreds of thousands of potential targets. And installing preventive screening at all of them fundamentally makes no sense because the attacker will be smart enough to go where you didn’t screen. So if you install all of these security measures in subways, and next time the terrorists bomb shopping malls, the money will have been wasted. This is the fallacy of defending against yesterday’s attack. Unless you go after the attackers, and the fundamental causes, all you will do is force the attackers to modify their tactics. And that is largely a waste of money."