The author is on to something. I would put a different emphasis. I think higher level expertise tends to not map well to words at all. There are some people who develop an incredible pedagogy, but it is a tiny minority of experts.
Frankly, the convo with Herbie isn’t super informative. What they are talking about is necessarily vague.
Frankly, the convo with Herbie isn’t super informative. What they are talking about is necessarily vague.