 Let ‘quaddition’ be redefined so as to be a function which agrees with addition for all pairs of numbers small enough for me to have any disposition to add them, and let it diverge from addition thereafter (say, it is 5). Then, just as the skeptic previously proposed the hypothesis that I meant quaddition in the old sense, now he proposes quaddition in the new sense. A dispositional account will be impotent to refute him. As before, there are infinitely many candidates the skeptic can propose for the role of quaddition. (Kripke 1982: 27)