A classmate approached me last week (after class) and asked why I ask about things that probably aren't going to be on the exam. I told him that it helps me understand things on a deeper level. He then said, "Do your understanding on your own, because it makes things confusing for the rest of the class." Seriously? I asked "why are we allowed to do that?" It took about 3 minutes out of the lecture. I told him he can feel free to tune out next time; he doesn't have to listen to something he doesn't think will be useful. It then occurred to me that my position might be a bit selfish. Am I being inconsiderate? Should I be asking the "why" questions during office hours? What are your thoughts? I actually believe there's some benefit to working through something by myself and do it as often as I can, but as long as I'm not monopolizing the lecture, then a question here and there shouldn't be a problem.