The bacteria which cause cavities also evolved alongside us. The problem worsened as we introduced more food for the bacteria (from the agrarian diet).
How would I know in advance that this gives Å and not Æ or à or Ā or  or À or Á or Ä? And how would I type the other ones? Don't have a Mac, so I actually don't know how it is supposed to be done.
> How would I know in advance that this gives Å and not Æ or à or Ā or  or À or Á or Ä?
The same way you know in advance that CTRL+SHIFT+@ gives you Å in Windows?
Both Windows and Mac can display an on-screen keyboard that will display the character that will be output if you press a key along with modifier keys like CTRL or Option.
Subgrid is going to be so nice to have. Layouts that designers consider 'obvious' will be trivial to implement. No more hackery to make nested elements vertically align.
I took several classes on it and I still didn't really 'get' it until I had to work on challenging problems in the real world. Granted, my education was not great quality overall.
I use bookmarks to enhance this. I save a page and then rename the bookmark to some letter codes, for hackernews it's "hn: Hacker News", which makes typing "hn" bring up the bookmark no matter how cluttered, or recently cleared, my browser history becomes.