But what about the example with the egotist? The fact that so many people can be so blatantly oblivious to their "unknown unknowns" makes me think I must have s

But what about the example with the egotist? The fact that so many people can be so blatantly oblivious to their "unknown unknowns" makes me think I must have some of them too. I can be cautious and look out for them, which should certainly help me reduce them, but these things are almost by definition the things that you don't notice.