I'm heading back to Tucson soon after a richly rewarding trip to the San Francisco Bay Area. I had the chance to spend time with some of my favorite people in the world -- including ones I hadn't seen in a number of years -- while also getting work done on two long-term projects of mine. But am I ever tired. I realize that there's nothing more annoying than a person on vacation complaining that they are worn out from having fun. So I won't complain. That said, I don't think it's likely that I'll stay awake long enough on the plane to get my free drink.