A brilliant historical artifact, and the irony that macOS has been Unix for most of the Mac's existence, and that Windows has included POSIX and/or Linux for most of its existence, is not lost on me.

The Dennis Ritchie anti-forward makes it even better:

> The rational prisoner exploits the weak places, creates order from chaos: instead, collectives like the FSF vindicate their jailers by building cells almost compatible with the existing ones, albeit with more features. The journalist with three undergraduate degrees from MIT, the researcher at Microsoft, and the senior scientist at Apple might volunteer a few words about the regulations of the prisons to which they have been transferred.

Thanks for reminding me about this gem! :)