I think the funniest part about this this post isn't the lack of typesetting among people who work with digital typesetting (there should be no mystery between

I think the funniest part about this this post isn't the lack of typesetting among people who work with digital typesetting (there should be no mystery between points, em, rem, px if you do this for a living, that's 101-level stuff)... instead, it is the subtext pointing that the latter of the two complaints that spawned this is that vertical centering is still a challenge when it really should not be. And I can't help but observe that the two are tightly related. Also, I didn't know the original Mac screen was 72dpi. That is so delightful.