Over at Pharygula, biologist P. Z. Myers comments on a Playboy interview with Mel Gibson where he is asked:
PLAYBOY: So you can’t accept that we descended from monkeys and apes?
GIBSON: No, I think it’s b***s***. If it isn’t, why are they still around? How come apes aren’t people yet?

The first is the extreme hypothetical: concocting some bizarre scenario (“A nuclear bomb is going to explode in New York City in one hour and only a captured terrorist knows where it is and how to defuse it.”) in which the only options seem to be torture or worse. The second is scaremongering, using inflammatory language to exaggerate beyond recognition either the powers of terrorists in general or some specific threat that was supposedly foiled by the authorities (Remember that Jose Padilla was originally supposed to have plans to detonate a ‘dirty bomb.’ That charge has been quietly dropped.) The third is to argue from the negative (“We don’t know, or can’t tell you, how many dastardly plots have been foiled or deterred by these government actions so we should fall on our knees in thanks to the government for carrying out these illegal actions that may have saved our lives.”)