The Invisible Forces comprise a system that influences and is influenced by human behavior. This system is made up of the invisible hand (economic forces), the invisible foot (legal and political forces), and the invisible handshake (social and historical forces). The invisible forces stem from David Colander, Microeconomics, 2nd ed. (1995), pp. 17-19. The Invisible Forces Weekly is the work of Bruce Larson. Its purpose is to provide a broader view of economics by considering human behavior, as reported online, in light of the invisible forces.