Ever since Donald Trump locked up the Republican nomination, there has been no shortage of recrimination and mockery directed at political analysts who failed to take his candidacy seriously. No one has taken a bigger beating than FiveThirtyEight editor-in-chief Nate Silver, the famed data journalist whose careful reading of poll numbers in the runup to the previous two presidential elections established him as a lonely voice of rationality and wisdom in a sea of dumb, emotional pundits.