"Often in a cosmogram there's an aim that goes beyond mere description or depiction: it's often a redescription, in the conditional or future tense: not the world as it is but the world as it could be. There can be a utopian intention, the goal of projecting new possibilities into a world which seemed fixed. Or to use a recent example, Philip K. Dick's novels map points where the standard ontology slips, where there are cracks in reality, out of...