"crazy" is "majority rules". Take germs for example.
Germs?
In the 18th century there was no such thing! Nobody'd ever imagined such a thing -- no sane person anyway. Along comes this doctor...Semmelweiss, I think. He tries to convince people... other doctors mostly...that there are these teeny tiny invisible "bad things" called germs that get into your body and make you...sick! He's trying to get doctors to wash their hands. What is this guy...crazy? Teeny tiny invisible whaddayou call 'em?..."germs"!
So cut to the 20th century! Last week in fact, right before I got dragged into this hellhole. I order a burger in this fast food joint. The waiter drops it on the floor. He picks it up, wipes it off, hands it to me...like it was all okay.
"What about the germs?" I say. He goes, "I don't believe in germs. Germs are just a plot they made up so they can sell you disinfectants and soap!"
After years of science, big bang and evolution, I think I may be becoming something of a fundamentalist Biblical creationist.
Hmmm.
