Robert Sparrow has recently claimed that unless there are reasons to think the sexed nature of human beings is normatively significant, current trends in bioethical reasoning force the conclusion that “we may do well to move toward a ‘post sex’ humanity” (American Journal of Bioethics 10: 7 (2010)). This commentary uses basic methodological principles from feminist ethics to argue that he has, in fact, given no reasons to think that a 'post sex' humanity is any more valuable than gender diverse (...) one, and no reason to think that sexual dimorphism has normative significance as a brute biological fact. (shrink)

A disadvantage of adopting reductio ad absurdum as a mode of argument is that it multiplies the options available to one's critics. As with any argument, detractors may deny the argument's premises...