I'm currently reading Ben Goldacre's Bad Science - which I heartily recommend. In chapter 6 entitled Nonsense du Jour, Goldacre cites an essay by philosopher Professor Harry Frankfurt of Princeton University - the essay is titled "On Bullshit":
It is impossible for someone to lie unless he thinks he knows the truth. Producing bullshit requires no such conviction...When an honest man speaks, he says only what he believes to be true; and for the liar, it is correspondingly indispensable that he considers his statements to be false. For the bullshitter, however, all these bets are off: he is neither on the side of the true nor on the side of the false. His eye is not on the facts at all, as the eyes of the honest man and of the liar are, except insofar as they may be pertinent to his interest in getting away with what he says. He does not care whether the things he says describe reality correctly. He just picks them out, or makes them up, to suit his purpose.
Remind you of anyone?



