If two people have equal knowledge of something, does it matter where that knowledge was obtained?

Let’s say, for example, we both know 2+2=4. You learned it from the Dean of Math (or whatever) from some college/university that claims to be the best (seems there are hundreds of them). I learned it at the track, where $2.00 bets are commonplace, and someone counts his last two bills, going “Two plus two is four dollars I have here.” We both now know the exact same piece of information. Did the source from where we learned that make one more knowledgable on the subject, or are we both have equal knowledge on the sum total of 2+2?