Draw a square around Einstein's face. Call the side length of the square a and the area of the square A. We have A=a^2. Einstein takes up some portion p < 1 of that area, so Einstein has area E = pA. Now we scale the whole thing by factor f. So the new square has side lengths fa, and thus area A' = (fa)^2 = f^2×a^2 = f^2×A. Since the relative portion the face takes up doesn't change with scaling, the face now has size pA' = p×f^2×A = f^2 × pA = f^2 E.
Does that help or was that not the part you were missing?
What are these called / do you have a source for that? I never heard of that and a quick Google didn't turn up anything except for changes planned for 2028.
Which old times are you referring to / what are "sensible" names?
I thought about it and I don't know what a better name would be. Off the top of my Head, I know Perforce, BitWarden, Subversion, fossil and git. And then the abbreviations CVS, RCS and SVN.
> One repo uses `master` but a subtree uses `main`. If you make a mistake and checkout `main` you end up clobbering your whole working tree with the subtree.
If you replace checkout with switch/restore, that foot gun goes away.
A very effective solution for that is a well-configured shell. IF you summarize the state of the repo in the prompt, it is always visible while typing a command.
That's the reason why it was replaced by two separate, more sensible commands:
git switch for switching branches etc, which is safe, and the inherently dangerous git restore for reverting changes in your working directory.
Does that help or was that not the part you were missing?