To an evader, a feeling of some kind is more important than truth. A man finds a certain fact or policy to be unpleasant, frightening, or guilt-provoking. Reality to the contrary notwithstanding, he does not want the fact to be real or the policy to be necessary; so he decides to blank out the offending datum. Or a certain idea or policy gives a man pleasure, reassurance, or relief, and he wants to believe in or practice it, even though he knows reality is against him in the issue; in Ayn Rand's words, place an "I wish" above an "It is".