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Some people are born knowing how to do everything. Good for them.
The rest of us either have to be taught or we have to learn from experience. "Experience" means making mistakes and screwing things up. Which by itself seems like a natural normal thing as long as the human in question doesn't get discouraged.
The downside, however, is that they keep manufacturing new humans, most of whom have to go through the whole process of screwing things up in order to learn. Consequently there will always be a layer of incompetent people screwing things up. People will enter and, we hope, leave the incompetence layer but the layer will always be there.