Examines the challenges to moral realism posed by constructivism. Poses a central challenge to constructivism: the initial constraints that define the context of choice for the agents whose responses are determinative of moral reality are either moralized or are not. If the former, then constructivism presupposes moral realism. If the latter, we have no good reason for thinking that the relevant constructors are really well suited to their task.
Keywords: constructivism,