If we don't make mistakes, it means that we are not really doing anything new or difficult or beyond our current, practiced skills. A real inventor is not afraid to make mistakes. Mistakes may bother the hell out of him, embarrass him, and they may cost him money, jobs or friends. Many of us have parents or peers who beat the child out of us with derision or abuse or with demands that we must grow up and cast off our childish ways. But there is a HUGE difference between childlike and childish.
Society is even harder on childish adults than they are on childlike adults.
Temper tantrums in the middle of a World Master chess tournament are unpleasant even when done by the brilliant but childish Bobby Fisher. This leads many of us to a belief system that puts US in the box. An inventor never grows up. Remember every child is an inventor. Every inventor is a child.