So smart people don't know when they're wrong because they're smart enough to convince themselves that they're right, and dumb people don't know when they're wrong, because they're too dumb to see how dumb they're being. We can't win.
Yes, I think the lesson to take away is that you want not only to be smart, but also wise and humble. Wise enough to realize you need to poke holes in your ideas, humble enough to fix your hypothesis when facts change.
>wise and humble...you need to poke holes in your ideas...
But where does critical thinking come in? Seens there should be a heuristic or generalized approach for deciding what to believe. Epistemology, I suppose.
And this should all preface the formation of our ideas in the first place.