Francesco Orilia

This paper outlines a version of instantaneous presentism, according to which the present is a point-like instant, and defends it from two prominent objections. The first one has to do with the difficulty of accounting, from the point of view of instantaneous presentism, for the existence of events that take time, dynamic events, which cannot be confined to a single instant. The second objection is of a Zenonian nature and arises once time is viewed as a continuum that can be subdivided ad infinitum. In response to the first problem, it is argued that the presentist can appeal to past and future instants as long as it is not assumed that there are events that occur at them. Once they are granted, one can then appeal to "past-oriented" and "future-oriented" properties such as *was P at t* (or *will be P at t*), where t is a past or future instant, in order to view dynamic events as occurring at the present instant. In response to the second problem, one must accept the idea that, as a new instant becomes present, there is no preceding instant which is immediately past. There can only be infinitely many past instants with increasingly lower degrees of pastness.

States of affairs involving a non-symmetric relation such as loving are said to have a relational order, something that distinguishes, for instance, Romeo’s loving Juliet from Juliet’s loving Romeo. Relational order can be properly understood by appealing to o-roles, i.e., ontological counterparts of what linguists call thematic roles, e.g., agent, patient, instrument, and the like. This move allows us to meet the appropriate desiderata for a theory of relational order. In contrast, the main theories that try to do without o-roles, proposed by philosophers such as Russell, Hochberg, and Fine, are in trouble with one or another of these desiderata. After discussing some alternatives, it is proposed that o-roles are best viewed as very generic properties characterizable as ways in which objects jointly exemplify a relation. This makes for exemplification relations understood as complex entities having o-roles as building blocks