I'm sorry, too. This is very confusing for me, too, you know, and I don't mean to be short with you just for that.

[He comes to lean on the doorjam, resisting the shoulder-pat he's always tempted to give to upset students but knows he shouldn't do. He doesn't apologize for bringing up the real world, though, considering... that's still his opinion. But he definitely should have been nicer about it.]