 Another simple theory says that the contents of experiences are sets of possible worlds in which things are as they appear to be in the experience. For instance, if one has a visual experience representing a red cube, the contents of experience on this view would be a set of possible worlds in which there really is a red cube in front of you. Or perhaps they might be a set of possible worlds in which the very cube C that is actually in front of you is red. The central idea behind this view is that to represent a situation—whether in language, in thought, or in experience—is to distinguish between two ways the world might be: first, ways the world might be if the situation does obtain, where these include the actual world; second, ways the world might be if the situation does not obtain. For instance, if a subject’s experience represents that there is a red cube in front of her, she thereby (on this general view of representation) represents the actual world as being among the worlds in which there is a red cube in front of her. Stalnaker (1984) and Lewis (1986) think this view best reflects the nature of representation. 