Those scenes are just there to establish that he’s capable, intelligent and talented in the ways the agency needs, so it’s plausible they would recruit him. Never-mind that they also establish the way he looks at the world and approaches problems which is then forgotten immediately.
Professors don’t always teach in their actual area of expertise. I had a German language professor whose PhD was in Philosophy and activity published in that field, in English, German and French journals. It does seem like an odd combination, but probably not a lot of students signing up for a class in usability of buttons, even from the fields you would expect to study them .