 An important question for proponents of TT is: What are FP’s precise ontological commitments? Putatively, FP theorizes about what goes on inside our heads—in the black box that lies between perceptual stimuli and behavioral responses. If so, FP posits inner entities that causally explain outward behavior. Taken at face value, FP would appear to be theoretically committed to the entities and properties that it speaks of as being causally responsible for our actions. Those who understand FP as having these transparent commitments assume that it is committed to explaining actions by appeal to causally efficacious contentful mental items, such as beliefs and desires (see, e.g., Fodor 1987, see also Rosenberg 2018). TTists of a realist bent assume that FP is committed to an unqualified realism about the entities and their properties that it quantifies over.