There is something that is not sensible or reasonable about “being right” that explains why this happens. Simply stated, there is a very strong feeling or urge in everyone to try to be right. And this happens along with an effort to make other people wrong. We often see this in people who are too critical of others.

He does a wrong action, accidentally or through failing to notice something. The wrongness of the action or the inaction is then in conflict with the person’s need to be right. So he then may continue to repeat the wrong action to prove it is right.