I agree, but not everyone can. I've worked with several people who were top experts in their field and absolutely sucked at accessible explanations. The author

I agree, but not everyone can. I've worked with several people who were top experts in their field and absolutely sucked at accessible explanations. The author alludes to it here: "the very expertise that makes the expert worth consulting also makes it hard for the expert to imagine what it was like to know nothing about the topic" - but that also carries over to ELI5 or ELI10. Another problem is that, to be frank, experts sometimes don't know how to explain certain concepts. For example, you can be adept in calculus without knowing where the rules come from. All you can do is relay the rulebook to someone else. Another problem, I think, is that we're actually overindexing on ELI5 / ELI10, a problem compounded by YouTube educators and LLMs. Many skills are hard to learn and require some trial, error, and hands-on practice. It's easy to come up with an endless supply of childlike metaphors. It's a lot harder to actually teach someone that way.