" If you’re asked whether you could possibly be mistaken about something and you say “No,” you might be affected by perception biases. If it is impossible, in your mind, for you to be wrong, then you have an inherently unscientific mindset and you likely won’t be able to uncover (or accept) the truth if it contradicts your opinion. "

― David G. McAfee , No Sacred Cows: Investigating Myths, Cults, and the Supernatural