Recursion revisited (2020)

Thanks for the submission ... it's always a great feeling when something you write is submitted to HN.

It was also submitted earlier, and is here:

https://news.ycombinator.com/item?id=24786731

That's from me, the author, and I use HN notify to check if anyone replies. If anyone has any questions then comment on the post, reply to this comment, or comment on the other submission, and I'll definitely see it.