A narrow mind seems just as disadvantatious to me, especially considering the circumstances. It's wrong to make a judgement without all the facts, either way. It's not exactly impossible, even if it is improbable.

[ There is a pause, a subtle inhale before he clears his throat and continues. ]

Anyway, I agree that it's something questionable, but I can only think of a couple of ways to go about proving it, none of them really advisable.