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Can the empirical sciences contribute to the moral realism/anti-realism debate?

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An increasing number of moral realists and anti-realists have recently attempted to support their views by appeal to science. Arguments of this kind (such as evolutionary debunking arguments or arguments… Click to show full abstract

An increasing number of moral realists and anti-realists have recently attempted to support their views by appeal to science. Arguments of this kind (such as evolutionary debunking arguments or arguments from moral disagreement) are typically criticized on the object-level. In addition, however, one occasionally also comes across a more sweeping metatheoretical skepticism. Scientific contributions to the question of the existence of objective moral truths, it is claimed, are impossible in principle; most prominently, because (1) such arguments impermissibly derive normative from descriptive propositions, (2) such arguments beg the question against non-naturalist moral realism, (3) science cannot inform conceptual accounts of moral judgements, and (4) the conceptual is logically prior to the empirical. My main aim in this paper is to clarify and critically assess these four objections. Moreover, based on this assessment, I will formulate four general requirements that science-based arguments in favor of moral realism and anti-realism should meet. It will turn out that these arguments are limited in several ways, and that some existing arguments have been unsound. Yet it is still possible in principle for the empirical sciences to contribute to the moral realism/anti-realism debate.

Keywords: moral realism; sciences contribute; anti realism; empirical sciences; realism anti; realism

Journal Title: Synthese
Year Published: 2017

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