Every year I write a column about where I was wrong in the previous year. This year I have less fodder, because my colossal errors in 2016 — underestimating President Trump, mostly — gave me a small dose of humility.

So, this year I will look at how I judged Trump. In an important way, I underestimated him, and this misestimation was a big part of the reason I refused to vote for him.