Everything that I do is one fewer thing that I ever have to do. The problem set that I just finished for 3.063 is the last problem set that I'm ever going to have to do at MIT. The two papers that I intend to write this weekend will be the last papers that I'm ever going to have to write at MIT. When I turn in my thesis a week from Friday, it's going to be the last thing that I ever have to turn in at MIT. Graduation will then be the last thing that I ever have to do at MIT. In a way it's all very thrilling and liberating but in another way it's a little depressing.