Film theorists and philosophers have both contended that narrative fiction films cannot present philosophical arguments. After canvassing a range of objections to this claim, this article defends the view that films are able to present philosophical thought experiments that can function as enthymemic arguments. An interpretation of Michel Gondry‘s Eternal Sunshine of the Spotless Mind (2004) is given in which the films criticism of the technology of memory erasure is just such a thought experiment, one that functions as a counter-example to utilitarianism as a theory for the justification of social practices.