Abstract

In ‘Can and Might’, Professor K. W. Rankin has presented three arguments that purport to refute the equivalence, ‘A is causally possible for P if and only if A is within P's power’. The first two arguments are attributed to Richard Taylor, and the third is Professor Rankin's own. I will argue that none of these three arguments effectively refutes the above equivalence. My arguments are not to be construed as simply a rebuttal of Professor Rankin's paper since he also appears to have some doubts about Taylor's arguments and I refrain from comment on other aspects of his paper except these three arguments. I conclude with some general remarks on.