Twenty-five years ago, Robb Moss and his fellow whitewater river-rafting guides took one last trip down the Colorado River. (Moss captured the trip in the beautiful verité-style documentary Riverdogs.) Leaving the river, their floating community, and the seventies, everyone put on clothes; some even donned ties. Now an established filmmaker and a teacher at Harvard, Moss returns to his friends to revisit the trip and document who they have become. Through their stories we receive a contemplative vision of how social pressure, time, and our physical beings inflect our choices and shape our lives. Short: A Lesson, a sweetly seductive tale centering on the tango. (Olga Rozanova, U.K., 2002, 8 mins)