Almost everyone I know is busy. They feel anxious and guilty when they aren’t either working or doing something to promote their work. They schedule in time with friends the way students with 4.0 G.P.A.’s make sure to sign up for community service because it looks good on their college applications. I recently wrote a friend to ask if he wanted to do something this week, and he answered that he didn’t have a lot of time but if something was going on to let him know and maybe he could ditch work for a few hours. I wanted to clarify that my question had not been a preliminary heads-up to some future invitation; this was the invitation