"Say, for the sake of example, there are three people who are all reasonably compatible, fond of one another, and considering taking advantage of the opportunity but having trouble making a decision. The first person, as a rule, is available for social engagements on Mondays, Wednesdays, and Thursdays. The second person is also available on Thursdays, but also Tuesdays and Fridays. Both of them are also occasionally available on the weekends. The third is available from Friday through Monday. Clearly they can maximize their opportunity for romantic liaisons by coming to a mutually satisfactory arrangement of splitting days."