In Search of the Trinity: A Dilemma for Parfit’s Conciliatory Project

Abstract I outline a dilemma for Derek Parfit’s project to vindicate moral realism. In On What Matters , Parfit argues that the best versions of three main traditions agree on set principles, which should make us more confident about prospects truth in ethics. show result this Convergence Argument can be interpreted two ways. Either there remain separate and deontically equivalent theories or remains just one theory, Triple Theory. Both interpretations fail deliver what is looking for. The first interpretation leads situation underdetermination theory choice gives rise skeptical challenge. second jettisons Conciliatory Project, is, reconciliation traditions. dilemma, contend, failing resolve antithetical lines thought. His search Trinity theorizing must thus fail.