Tweedledum: "I know what you're thinking about, but it isn't so, nohow."
Tweedledee: "Contrariwise, if it was so, it might be; and if it were so, it would be; but as it isn't, it ain't. That's logic."
From Through the Looking Glass, by Lewis Carroll
These two characters remind me of the use of contrarianism as a means of generating ideas: To suspend judgement and consider contrary, opposite possibilities; no matter how absurd.