Please don't rewrite titles like this. The HN guidelines ask you to use the original title unless it is misleading or linkbait (https://news.ycombinator.com/newsguidelines.html). They certainly don't ask you to make them more so.
This is a pretty solid article. I think the JIT learning idea is a strong one; his anecdote about the public speaking advice he received immediately after a speech that stuck to this day resonates. Sometimes the smallest bits of thoughts and advice like that make a huge difference simply because they arrived at the time when you were most receptive and "vulnerable" to hearing it. Though I think learning can be fun, I see the point the author is making. I wonder however, what's to be done when there is no one there for JIT help? That's when we push the frontier of human knowledge, and cultivating that is important as well. I couldn't help while reading this to find it analogous to compiled and interpreted languages, in more ways than one.
Very good article with great observations, and even greater practical recommendations. Anyone working in edtech should read this.