One day, I started looking at the people around me, and I began to realize how much they looked like apes. I quickly stopped doing this, because I feared it would cause me to treat them with contempt. And you know what? Doublethink worked. I didn't start treating people with more contempt as a result of purposely avoiding certain knowledge that I knew would cause me to treat people with more contempt.

If you think that my efforts to suppress observations relating the appearance of humans with the appearance of apes were poorly founded, then you have a very instrumentally irrational tendency towards epistemic rationality.