Clever Irrationality

"The theologians cleverly argue that a truth that is "above reason" can't be proven false. Very clever, but not very rational. Such reasoning opens the door to believing that nothing is as it appears to be, that anything that seems to be contradictory may actually be possible. If three can equal one in a single special case, then for all we know, two can equal six and eight can equal four in some other special cases. In some worlds, perhaps a six-sided die has eight sides. Can you prove that such a world does not exist? The world is already full of things that appear to be what they're not (like lots of clever people who appear to be rational). Why add another layer to this problem just to defend an article of faith?"

A great look at irrationality.

http://skepdic.com/essays/anythinggoes.html