 The semantic account is probably the most popular in the philosophy of mind, because it appears to best fit what is required of a philosophical account of cognition. Since minds and digital computers are generally assumed to manipulate (the right kind of) representations, they turn out to compute. Since most other systems are generally assumed not to manipulate (the relevant kind of) representations, they do not compute. Thus, the semantic account appears to accommodate some common intuitions about what does and does not count as a computing system. It keeps minds and computers in while leaving most everything else out, thereby vindicating the computational theory of cognition as a strong and nontrivial theory.