Abstract
I argue for the rational inescapability of value objectivism, the thesis that at least some normative appraisal is not simply a matter of how, subjectively, we feel about the world; it is a matter of how, objectively, the world ought to be. I do this via a two-stage argument, the first stage of which is based around a thought experiment, the second stage of which is based on how those who reject the argument of the first stage must present their doing so to themselves if they are to consider themselves rationally justified. I sketch a way in which this argument might lead one rationally to favour moral objectivism.