 In ordinary color experience, it is implied, physical objects are represented (or presented) as having certain qualities that are illusory, and accordingly, that experience involve errors. It is important to keep in mind that such claims are not simply negative. Illusions and errors can serve positive functions. The claim that experiences represent objects as having qualities with a certain character, can explain why we form the concepts we do, why we identify and recognize objects, and so on. This means that it is still the case that there are important reasons for retaining our ordinary color concepts, even though they are not actualized. This fact motivates the thought that the proper attitude to adopt towards our color language is a fictionalist one: for many purposes we should think of the color sentences with their ordinary meaning—but treat them only as if they are true (see Gatzia 2007, 2008).