Causal theories of the moving spotlight

This paper brings together the Sarvastivada (a major school of Abhidharma Buddhism) and Miller's (2019) moving spotlight theory to see how presentness is explained in terms of causation. The paper argues that a causal theory of presentness like Miller's encounters a dilemma: causation is either synchronic or diachronic, but neither is safe in the presence of the challenges. On the one hand, if causation is synchronic, how does a causal chain extend over time so that the wave of causation (and hence the spotlight) can move at all? On the other, if causation is diachronic, then a present moment has a temporal extension enough to accommodate a cause and its proximate effect. The paper proposes a synchronic notion of causation that counters the first challenge. This can be done by bringing together the Sarvastivadin grasp-production model of causation, some Stoic ideas about causation, and some Armstrong's metaphysics.