Beautiful, thank you!

Beautiful. And excellent writing!

Would this work on a microcontroller like an ESP32?

Probably, but you'd have to write a custom renderer for it.

I will definitely try your approach of not talking about semantics but about the free UX you get when using the proper elements. I have the same experience when talking to my devs about semantic html.

Just last week I visited Eise Eisinga’s planetarium in Franeker, The Netherlands (https://www.planetarium-friesland.nl/en/). Finished in 1781, he used only wood and nails to fit an intricate and quite accurate orrery in the ceiling of his fairly modest house. This Instructable is very enticing!

Do explain how you think this is a joke. Genuinely curious.

There have been tons of fake apps that claim to do everything from microwaving food to measuring blood pressure. Not everyone knows everything about how things work in principle. I could imagine that GP doesn't know whether this is anywhere near realistic and just assumes it's a joke, maybe?

I have bookmarked it and will certainly refer to it in the future. Thanks!