ABSTRACT
This chapter examines chief kinds of possibility in most detail that are all non-logical and starts with a brief description which will fulfil the secondary function of explaining some terminology. The most controversial aspect of this terminology is likely to be the sharp and significant distinction that it implies between natural possibility and possibility for choice, between natural powers and personal powers. Nevertheless, the theory that power consists in the possibility or probability of its exercise cannot be dismissed simply on these grounds, since very similar complaints can be made on behalf of the probability statements we make 'in ordinary life'. The Keynesian theory plunges all probability into the realm of the universal and timeless. The chapter proceeds with the task of sorting out the kinds of possibility and describes more accurately the relationship between relative possibility and possibility for choice.
