When you have found God, and you know what he is like and what he wants from us, or, if you have found out that there is no God, when you finally understand what life is all about: money, social status and sex, to eat or be eaten, or, when you have found your true self, or that the self is an illusion, or, when you know what will happen to us after death, then you are deluded.
When you have it all figured out, this is a clear sign that you are an idiot. Later, you will realize that you had it all wrong. You had fooled yourself. And now you have found the truth, at last.
When you know what political or philosophical system is superior, then you must ask yourself: could it be that I don't see the full picture? If the answer is no, I am right, then you can be convinced that you have been fooled.
I have lost friends to religious and spiritual cults, crazy ideas, and political convictions. And I have had friends who have lost me because of my thoughts.
Ingrained convictions are like magic spells.