In my vast experience, the only person who knows EVERYTHING about ball pythons is the one who just "rescued" their first ball python just yesterday from a pet store for $99.99 and by the way, needs to know if it can eat tortoise food and what exotic breed is it?
Reminds me of a grooming seminar I was attending and two young ladies struck up a conversation and asked my opinion on the presenter. When I disagreed with several of the person's major points, they got a bit snooty and asked why I thought I could possibly know better than someone who had been grooming her own show cats for 4(FOUR!!) years?
Just imagine the faces... "Perhaps because I've been grooming cats professionally for over two decades."
But of course, I'm not presenting a seminar. I'm pretty sure they wouldn't let me, because having to hire a live person to BLEEEP all my cursewords during my talk would be pricy.