In this chapter we examine the time course of dynamic-action representations using an experimental paradigm for studying partially occluded action. To address this issue we focus on transitions between perceptual mechanisms (taking care of representing action before and after occlusion), and substitute mechanisms for simulation (taking care of representing the action during occlusion). Does simulation just carry on old processes – or initiate new ones? We discuss first results concerning the impact that features of unoccluded action segments make on the representation of occluded segments. These results suggest that action simulation is a creative process, creating novel invisible actions rather than extrapolating visible actions. Observers thus fill the gap by creating something new, not by carrying on something old.