This article springs from the claim that representations of mundane human life are just as prominent as nova in contemporary sf, and that through their generative interplay the genre figures a transient dreamscape for visitation by the (post)human mind, via which the reader gains an expanded perception of not only their own empirical environment, but also of posthuman possibility. The presence of the quotidian in sf confirms the capacity of the (post)human mind to transcend the presumptions of traditional humanism. By deconstructing the rhetorical role of nova in Duncan Jones’s Source Code (2011), I demonstrate that the novel content of sf fades intratextually, just as nova within the genre tend towards entropy intertextually; an accumulative process I term novum decay
