I've been screamed-at, in an office-lobby, by my supervisor, for not recognizing people by their faces.
I'm face-blind, and only know that because of that series-of-incidents.
I didn't know, until my mid-30's, that ANYBODY ANYWHERE could ever recognize people just by their faces.
Absolutely stunning.
I recognize people by their being where they're supposed to be, the way they move, their voice, their clothing, all together, and usually I can recognize 'em, if I've seen 'em recently-enough.
That normals can recognize people only by seeing a face??