Hasn't common sense been wrong before? Of course. But how do people show that a common sense view is wrong? By demonstrating a conflict with other views even more firmly grounded in common sense. The strongest scientific evidence can always be rejected if you're willing to say, "Our senses deceive us" or "Memory is never reliable" or "All the scientists have conspired to trick us." The only problem with these foolproof intellectual defenses is... that... they're... absurd.

--Bryan Caplan