Re: [css3-values] Physical length units

> Just like authors should expect the 1rem to match be sized to whatever the
> default font size should be for that particular user in that particular
> environment for things to be readable,

Um, I don't. I expect it to be whatever I set on the html element - I
use it to give me much more consistent vertical rhythm without
worrying about inheritance problems. It's a convenience and
flexibility thing for me, not an accessibility thing (though it's that
too, that's not the main draw).