At the beginning of the semester, our civpro professor addressed everyone by "Mister" this or "Miss" that. But sometime in the last few weeks, he has been addressing some people by their first names. Then there are others who he still calls "Mister" or "Miss." Even though he has called on me a few times already, it's still "Mr. Jogger". There's another dude in class he has called on more times than he has me, and he is still "Mister so&so" I thought it may have been age-related but the other guy is much closer to the average 1L's age in my class. I can't figure out the rhyme or reason.