We all know this. It's so well known. The analogy of when you're learning to walk. You have no idea how many times you fell down, but you got back up, and you walked today without falling down, hopefully regularly, right? But imagine you just said "No, no, no, if I don't walk this time, I'm not getting up again, if it doesn't work this time I quit." We'd still be crawling as adults, We don't want to be crawling as adults.