 Jerry Fodor’s 1984 “Semantics, Wisconsin Style” gave the problem of distinguishing content-determining causes from non-content determining causes its best-known guise as “the disjunction problem”. How can a causal theory of content say that “X” has the non-disjunctive content dog, rather than the disjunctive content dog-or-blow-to-the-head, when both dogs and blows to the head cause instances of “X”? By 1987, in Psychosemantics, Fodor published his first attempt at an alternative method of solving the disjunction problem, the Asymmetric (Causal) Dependency Theory. This theory was further refined for the title essay in Fodor’s 1990 book A Theory of Content and Other Essays.