Abstract

1. Le Poidevin’s Central Argument The argument on which Le Poidevin focuses in his paper is as follows: (1) If the tenseless theory of time is true, tense is mind-dependent. (2) The correct explanation of (various aspects of) temporal experience requires appeal to objective causal asymmetry. (3) The objectivity of causal asymmetry entails that the future is open. (4) If the future is open, tense is not mind-dependent. (1) and (4) entail: (5) If the tenseless theory of time is true, the future is not open. (3) and (5) entail: (6) If the tenseless theory of time is true, then no account of temporal experience that appeals to objective causal asymmetry can be correct. Finally, (2) and (6) entail: (7) The tenseless theory of time is false. 2. My Response to Le Poidevin Le Poidevin had many interesting things to say, on which I commented at length. It emerged, however, that perhaps the most important question concerned an argument for the conclusion that the world is a tensed or dynamic world in which the states of affairs that are actual as of a given time t states of affairs that are earlier than time t, or simultaneous with time t, but not states of affairs that are later than time t. The argument in question rested upon a non-reductionist analysis of the concept of causation, and what I attempted to do in my response to Le Poidevin was, first, to show that the argument from causation escapes Le Poidevin's objections, and, secondly, to describe one of the important advantages that result from combining my non-reductionist account of causation with a dynamic view of the nature of time according to which the past and the present are real, but the future is not. In my response, I did not attempt to argue in support of the non-reductionist account of causation in question. Elsewhere, however, I have argued both that there are decisive objections to reductionist approaches to causation, and that the realist account that I have set out can be supported by a variety of positive arguments.