 Unsurprisingly, the difficult task for Simulation Theorists is to establish that visualizing has feature (b), that is: it is implemented by the reuse of the visual mechanism; and its outputs (that is, visual images) resemble genuine visual experiences. Simulation Theorists maintain that they have strong empirical evidence supporting the claim that visualizing satisfies  PROC.  Here is a sample (this and further evidence is extensively discussed in Currie 1995, Currie &amp; Ravenscroft 2002, and in Goldman 2006):