 Another objection that has been influential is the Swampman objection. Swampman-style examples have been around for some time (Boorse 1976; Millikan 1984, 93). Swampman in particular was introduced by Davidson (1987) as a potential objection to his own historical (but not teleological) theory of content. When Swampman comes into existence he is a perfect physical replica of Davidson at a certain point in time (t).