Esperanza, Many automated machines run meticulously throughout the day, seemlessly moving from segment to segment in the manufacturing process. I think classes can move smoothly, from one segment of the topic to another, especially when all of the resources (handouts, copies, exercises, lecture, readings, etc) are present and the instructor can just glide through the lesson, even addressing questions or clarifying information as the need arises. This can't occur without thought, planning and preparation. Plus, this is our job, we're paid to do it, and only poorly monitored instructors get away wi8th doing anything less. Barry Westling