i dreamed i was back in colledge

I had missed the beginning of the semester
due to health issues, I think
so I was going to classes
to see if I was still enrolled
and whatnot
I went to this one class
and I guy I used to work with
who is not someone I'd want to be in a class with was there
the professor asked if I had any questions
and this guy says:
tell her about connectivity
so
he starts talking
and drawing on the board frenetically
about the energetic connections
between seemingly unrelated things
but after he spend the whole class on that
he says that the class isn't about that
so I still don't know whether to drop the class or not