That was a pleasure to read. Well written, nicely formatted and good links to further reading topics. The only missing piece was talking about https://github.c

That was a pleasure to read. Well written, nicely formatted and good links to further reading topics. The only missing piece was talking about https://github.com/dtolnay/thiserror https://github.com/dtolnay/thiserror which I would expect to be prominently featured given how prevalent it is And possibly https://github.com/dtolnay/anyhow https://github.com/dtolnay/anyhow which is arguably a simpler form of "error handling" but sometimes that's all you need—although probably not in the Finance or Space industries ;-)