  In response to such examples, Sugden (1986/2004) and Vanderschraaf (1998b) develop generalized game-theoretic analyses that do not require convention to solve a coordination problem. In practice, the necessary revisions to Lewis’s account are not very sweeping, since they basically amount to excising clause (4) from his conceptual analysis. Vanderschraaf (1998a) argues that these revisions yield a theory closer to Hume’s original account.