I have a hypothesis. In general people have poor perception of their ability along any measure X. Sometimes they are better than they think but most of the time

I have a hypothesis. In general people have poor perception of their ability along any measure X. Sometimes they are better than they think but most of the time they are worse than they think. The former will happen more often if you have a tough teacher or a guide, while the latter will happen more often in tasks with less feedback other than your own thoughts (Most of us think we are better drivers than we actually are).