Good article, enjoyed it. I might give this idea a shot!

> Comments: these contain high level descriptions (faster than reading the code) and external context (the “why” that reading code can’t answer). This is the most scannable thing in any big code file.

Not sure about that one, depending on comment culture. Comments are prose and not structured, so to understand their meaning is a lot more cognitive load for me than (most) code. I certainly wouldn't have thought to call them "scannable".