This chapter discusses the notion that time passes, along with two major families of objections to this notion. The first kind of objection concerns the rate at which time passes; it has often been suggested that no coherent rate can be given. The alleged problems for the standard view, that time passes at one second per second, are discussed. A positive suggestion is then made for a way of making sense of the claim that time passes at one second per (...) second, based on the notion of ‘stretching’ properties such as ‘being future’ across a time series made up of events. The second family of objections concerns the experience of time passing. Two arguments are discussed, one of which concerns epistemological issues while the other concerns the intentionality of experience. Overall the arguments from experience weigh against the passage of time. (shrink)

Dynamic theories of time typically commit to the claim that “time passes”. In this paper I develop a version of the ‘no alternate possibilities’ argument in order to show that time does not pass, but that this is no threat to dynamic theories of time.

According to the No Alternate Possibilities argument, if time passes then the rate at which it passes could be different. Thus, time cannot pass, since if time passes, then necessarily it passes at a rate of 1 second per second. One response to this argument is to posit hypertime, and to argue that at different worlds, time passes at different rates when measured against hypertime. Since many A-theorists think we can make sense of temporal passage without positing hypertime, we pursue (...) a different response. We describe several worlds that do not contain hypertime, but do contain differential passage: worlds where time passes at different rates in different subregions within the same world. Hence we argue that even if we focus just on the set of worlds that do not contain hypertime (whether this is all, or only some of the worlds) we find that not all these worlds are such that time passes at a rate of 1 second per second. Thus the No Alternate Possibilities argument fails even when restricted to just this set of worlds. (shrink)

Presentists argue that only the present is real. In this paper, I ask what duration the present has on a presentist’s account. While several answers are available, each of them requires the adoption of a measure and, with that adoption, additional work must be done to define the present. Whether presentists conclude that a reductionist account of duration is acceptable, that duration is not an applicable concept for their notion of the present, that the present has a duration of zero, (...) or that that the present has a duration, a more robust account of the present is required. I suggest that some of the most difficult questions about duration can be avoided at the cost of no longer viewing presentism as a theory about time, but rather as a theory about existence. In the conclusion, I suggest an interpretation of presentism that allows it to endorse the view that time is nothing more than the measure of change. (shrink)

The issue whether there is any necessary connection between time and change turns, I argue, on the problem of what constitutes an accurate measurement of how much time passes. Given a plausible hypothesis about how time is measured, Shoemaker’s well known argument that time can pass without change can be seen to be unsound. But Shoemaker’s conclusion is not therefore false. The same hypothesis about time measurement supports a revised version of Shoemaker’s argument, and the revised argument does establish that (...) the passage of a quantity of time does not require that change occur during that time. Though Shoemaker’s conclusion is vindicated, it does not follow that there is no necessary connection at all between time and change. On the contrary, there is a connection which is simply of a different kind from the one Shoemaker had in mind. (shrink)

According to the No Alternate Possibilities argument, if time passes then the rate at which it passes could be different but time cannot pass at different rates, and hence time cannot pass. Typically, defenders of the NAP argument have focussed on defending premise, and have taken the truth of for granted: they accept the orthodox view of rate necessitarianism. In this paper we argue that the defender of the NAP argument needs to turn her attention to. We describe a series (...) of worlds that appear to contain differential passage: worlds where time passes at different rates in different subregions. If the NAP argument is to succeed, rate necessitarians must show that each of these worlds is either metaphysically impossible, or does not contain differential passage. (shrink)

In this paper I look to develop a defence of “presentist temporal passage” that renders presentism immune from recent arguments due to Eric Olson. During the course of the paper, I also offer comment on a recent reply to Olson’s argument due to Ian Phillips. I argue that it is not clear that Phillips’ arguments succeed.

Some believe reality is dynamic: time passes, not just in our experience of reality, but objectively, in reality itself. There are many objections to this view. I focus on the rate objection: that time passes only if it passes at the rate of 1 second per second, but that it cannot coherently pass at that rate. Existing replies to this objection do not fully engage with its motivation. My aim is to refute the rate objection. Time can coherently pass at (...) the rate of 1 second per second. This does not conclusively show that time passes, but it removes one of the main obstacles to believing that it does. (shrink)

Eric Olson argues that the dynamic view of time must be false. It requires that the question ‘How fast does time pass?’ has an answer. But its only possible answer, one second per second, is not an answer. I argue that Olson has failed to identify what is wrong with talk of time’s passage. Then I argue that, nonetheless, he is right to reject it. To say that time passes is analogous to saying that space is dense, and to ask (...) about the rate of time’s passage is analogous to asking how dense space is. Since the questions are on a par the dynamic view of time, which requires that they are not, is mistaken. (shrink)

Recent work on time. There is, at present, a lot of varied and interesting work being done in the philosophy of time; too much for me to fully engage with all of it here. I will focus on three debates that have been particularly busy over the last few years: how do presentists ground true propositions about the past? How does time pass? How do we experience time’s passing?

Detractors of temporal passage often argue that it is meaningless to say that time passes or flows, else time would have to pass at a rate of one second per second, which is in fact not a rate but a number, namely one. Several attempts have been recently made to avoid this conclusion, by retorting that one second per second is in fact not identical to one. This paper shows that this kind of reply is not satisfactory, because it demands (...) a substantive revision of the algebraic behaviour of quantities. (shrink)