Go pull a few condoms over your head and see what you see; maybe something, but probably not much. That simulates the protective juvenile sheath in which most of us live our entire lives and accept as normal. Three seems too many and one seems not enough, so let’s say two. You know how, when you’re watching a wildlife program or visiting a zoo, and you see all the animals and fish and birds walking, swimming and flying around with two condoms on their heads? That’s right, you don’t, because we’re the only ones who go through life that way.