[galago]

I agree. Optima is a humanist sans-serif but he doesn't seem to know that terminology.

https://en.wikipedia.org/wiki/Category:Humanist_sans-serif_t...

[GavinMcG]

He uses the term in his non-typographer-oriented book about typography, so that would be a little surprising: https://practicaltypography.com/verdana-alternatives.html

[bradrn]

That isn’t the appropriate term for this post, though: most humanist sans-serifs don’t have the flared ends which he highlights for Optima.