“You can ask me whatever you damn well please but I have never in my life had a student question my knowledge!”
That’s a sad state of affairs.
Even if one were to pretend briefly that your former professor wasn’t trying to silence and derail someone who has every reason to know more about this topic than her, no one — and I do mean no one — knows everything.
Never questioned by a student? That means no one is actually _thinking_ in your classes.