The one thing I would have liked to see in this article would have been the benefits and downsides of both qualities. Intellectual Egotism, and Intellectual Modesty. That would have been a balanced approach.

There are people who know that they are intellectually modest that read this article, and it may reinforce their belief that being intellectually modest is the one true path! There are people who know that they are intellectually arrogant and may feel that they are destined for hell by reading this article. There are some advantages to being an egotist as well and disadvantages being modest.

The other subtle incoherence I wanted to point out is, at some point the author claims intellectually modest people are in both classes of people, conservative and liberals. But he does say that republicans by and far are more likely to not accept a person who has "flip flopped" [may or may not be for good reasons] than a democrat. So assuming most conservative people are republicans, and most liberal people are democrats there is some intellectual quality that differentiates their bases. This probably needed more analysis in my opinion.