I already know it is likely that next week's column will be late. Here's why. As I wrote (Sunday April 29), Vicki and I are preparing to ride 50 miles in training for next Sunday's 50-mile ride in the Napa Valley to raise money to fight diabetes. What with travel to and from the valley, and exhaustion, and having to teach the next day, I feel pretty certain I won't get the column filed on time--unless I file most of it Friday afternoon. The hardest part of a long bike ride, by the way, if you didn't already know, is that it is hard on your sitting area.