 Mellor’s suggestion, though, is liable to the problems of reverse-finks and maskers. One can easily set up an analogous case to an example of reverse-finks or maskers that shows that Mellor’s conditional is not entailed by ‘\(x\) is triangular’: \(x\) is triangular but if its corners were about to be counted a sorcerer would change its shape so that the result of counting would not be three. Further, Prior (1982, 1985) argues that if we are to understand ‘correctly’ in the antecedent of Mellor’s conditional as referring to the method of counting, as opposed to the result of counting, then his claim is false. For there are possible worlds in which quirky laws of nature ensure that counting always gives the wrong result. (Bird (2003, 2009) gives a useful discussion of the general lessons that should be drawn from the debate between Prior and Mellor.)