Another banger from @mwichary. His blog and articles on UI/UX and keyboards continue to just hit it out of the park. This one on the Fn key told me more about a key I've used for decades than I ever knew. https://aresluna.org/fn/ Plus, a lot of good ranting.
I don’t know what is Apple’s endgame for the Fn/Globe key, and I’m not sure Apple knows either

The origin and the evolution of the most confusing modifier key

@glennf @mwichary Only tangentially related, but it's crazy to think that Apple released hardware and documentation for “alternative operating systems.” School aged Mac using me had no idea what these keys were for, because I believe many of them did nothing in Classic Mac OS. On the plus side, introducing Control to the Mac turned out to be great when Mac OS X came along 15 years later with its UNIX terminal.
@jackwellborn @glennf Oh, I forgot about this spread! That’s really great.

@jackwellborn

That's a pretty good tangent; I had no idea the function keys were introduced to the Mac in association with that notion. (And a decade later, it seems official enough that Phil Schiller's "requiem" for the Mac's function keys didn't take.)

@Starfia @jackwellborn Can you say more about that requiem reference?
@Starfia @jackwellborn Ah, that was Touch Bar, right? (That was a decade ago? Jesus Christ.)

@mwichary, @jackwellborn

That's it; at 34:05 here.

https://www.youtube.com/watch?v=EA8vDBY6bCs&t=34m5s

(Heck, that even comes as a direct segue from the also-extinct butterfly keyboard. Rewatching this, I actually get the sense their aim at the time was for both to become normal across Macs.)

Apple – Special Event Keynote – October 2016

Apple Special Event. October 27, 2016. Take a look at our latest MacBook Pro with the revolutionary new Touch Bar.http://apple.co/2gfEV0N

YouTube