The sound of silence

My inbox is empty and my phone is not ringing, which is pretty unusual for this time of year. Grades have been out for a week but I have not received the usual round of whining messages from students unhappy with their grades. There's always at least one who comes to me at the last possible moment and says, "What can I do to bring up my grade?" I always want to say, "Build a time machine, go back to January, and this time come to class and turn in the assignments." But this semester I won't even have a chance to say that because my students seem unusually satisfied with their grades, or at least if they're not satisfied, they're not saying so. Not that I'm complaining.