This post is an attempt to write up what I consider a useful lesson about intellectual discourse. The lesson, in short, is that it is often helpful to control for a thinker’s big idea. That is, a proponent of a big idea may often overstate the plausibility or significance of their big idea, especially if this thinker’s intellectual persona has become strongly tied to the idea.

This is in some sense a trivial lesson, but it is also a lesson that seems to emerge quite consistently when one does...