Russ Shafer-Landau

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I criticize an important argument of Michael Smith, from his recent book The Moral Problem (Oxford: Blackwell, 1994). Smith's argument, if sound, would undermine one form of moral externalism 2013 that which insists that moral judgements only contingently motivate their authors. Smith claims that externalists must view good agents as always prompted by the motive of duty, and that possession of such a motive impugns the goodness of the agent. I argue (i) that externalists do not (ordinarily) need to assign moral agents such as a motive, and (ii) that possession of this motive, when properly understood, is morally admirable

This paper reconstructs what I take to be the central evolutionary debunking argument that underlies recent critiques of moral realism. The argument claims that given the extent of evolutionary influence on our moral faculties, and assuming the truth of moral realism, it would be a massive coincidence were our moral faculties reliable ones. Given this coincidence, any presumptive warrant enjoyed by our moral beliefs is defeated. So if moral realism is true, then we can have no warranted moral beliefs, and hence no moral knowledge. In response, I first develop what is perhaps the most natural reply on behalf of realism namely, that many of our highly presumptively warranted moral beliefs are immune to evolutionary influence and so can be used to assess and eventually resuscitate the epistemic merits of those that have been subject to such influence. I then identify five distinct ways in which the charge of massive coincidence has been understood and defended. I argue that each interpretation is subject to serious worries. If I am right, these putative defeaters are themselves subject to defeat. Thus many of our moral beliefs continue to be highly warranted, even if moral realism is true