Do we ever really know what we are doing? Do we ever really make the right decisions? How is knowledge gained if we can't learn from certain mistakes that we make? The smartest people don't even have all the answers. I guess in retrospect we shouldn't really have all the answers anyway. If we did, there would be no surprises in life. Everything would be completely predictable. Who wants that? Most people don't want to know what's going to happen next. That's probably the best way to be.