With these concepts in place, Chisholm is prepared to answer the question with which he started. Suppose again that a certain person did not travel to Boston this morning. To say that he could have done otherwise — that he could have traveled to Boston this morning — is just to say that as of this morning, going to Boston was either directly or indirectly in his power. Chisholm claims — with some plausibility — that this account of the meaning of ‘he could have done otherwise’ explicates what those who believe in freedom have in mind when they say that someone could have done otherwise. Furthermore, in virtue of various technicalities of the definitions, it apparently turns out that Chisholm’s account of the meaning of ‘he could have done otherwise’ is adequate to all the cases that prove difficult for theories such as the ones surveyed above.