“First principle: there's no such thing as reality. We make it up by perceiving stimuli from the environment - external or internal - and making statements about it. Everybody perceives stuff, everybody makes up statements about it, everybody - so far as we can tell - agrees enough to get by, so that when I say 'Hand me the coffee' you know what to hand me. And that's reality. Second principle; people get used to a certain kind of reality and come to expect it, and if what they perceive doesn't fit the set of statements everybody's agreed to, either the culture has to go through a kind of fit until it adjusts...or they just blank it out.”