That.
An introverted engineer looks at his feet when he talks to you. An extroverted engineer looks at YOUR feet when he talks to you!
An extrovert mathematician will be looking at the other guy's shoes.
ME: Probably all of them BOSS: What do you mean ME: Well, like for example, pickle
Armenia every word I say!
Logs on to Wikipedia*
I mean it's not like you see school librarians seeing a student use Wikipedia on one of the computers and puts them in detention for "attempted plagiarism"