My parents are both very cognitively disabled, so I have found myself having to explain user interfaces to them in words. It's a really interesting way to evalulate a UI and often makes some of them look extremely silly, e.g.
"You see how of those four rectangles for TV shows, one of the rectangles is like very slightly larger than the others? If you hit the button on the remote, that's the show that will start playing.”
Who would EVER want that kind of UI?
https://ruby.social/@davetron5000/112667343302207235