I just want to comment on how clear I find Filippo Valsorda's writing on this kind of thing. Even for an old dunderhead like me, his mathematics and examples were easy to follow. I really appreciate that kind of clarity in technical writing.

Agreed. He presents the math in a way that illustrates his point without being difficult for non-mathematicians to grasp.

A lot of blogs get hung up in the math, even when it is just supporting evidence for a broader point.