Abstract
In spite of the title, the author of this book asserts that its primary aim is to offer a reasonable account of the concepts of possibility and potentiality. His analysis of these concepts allows him to approach the free will controversy in his own way and to offer many interesting analyses and arguments bearing on the issue. He distinguishes three kinds of non-logical possibility: epistemic or relative possibility, natural possibility or natural power, and possibility of choice or personal power. He thinks that the arguments for determinism have been based in one way or another on a failure to notice the subtle differences which exist between these three kinds of non-logical possibility. Although there is room for doubt that his analysis adds up to a decisive refutation of determinism, he has found many interesting differences between kinds of possibility and potentiality which bear on the free will issue and other philosophical issues as well. There is a discernible influence of Ryle and Austin on the book although both of these philosophers come in for criticism, especially Ryle for his failure to carefully separate the different meanings of 'power', 'tendency', 'capacity', and similar terms, and for his general commitment to the notion that all power is conditional. This latter thesis is one of the author's main targets.--R. H. K.