This morning, the Choate faculty had a three-hour professional development session. (No classes were scheduled for the day, as this week has an academic Saturday.) This may be a nice break in routine for my colleague, but it totally throws off my morning. That's because I never teach on Wednesday morning. I am scheduled to teach--one or two classes per term--in rotating blocks that do not meet on Wednesdays or Saturdays so I can be available in the Department of Athletics office on game days. So a three-hour block like this on a Wednesday cuts into my productivity in a big way.