present a thought experiment, namely, the evil demon. It is equally clear that the presentation lacks innovation, as the film merely presents Descartes’ thought experiment in a contemporary setting, employing it as a plot device in a science fiction film. The use of the thought experiment as a device may be an artistic merit, but the philosophy is not innovative precisely because it takes a famous thought experiment and re-presents it. Memento does not represent a thought experiment. Although there have been numerous films with a-chronological narratives, none have used precisely this method or I propose exhibited the degree of complexity evident in Memento both of which are essential to the experiential affirmation for which I have argued. If there is a relation between Memento and thought experiments, then that relation is not one of presentation or illustration, but constitution: the film is a thought experiment