How can I be sure?

This is just like what happens in class!
*listens to lecture on [subject] for fifty minutes*
"Wait when did we switch topics to [subject]?"
We've been on this topic for the entire goddamn period, pull your head out your ass and pay attention and your average might go above a .9 by the end of the year.

How can stupid people become less stupid if they can't ask their stupid questions?

thats a real thing, its called the united states congress.