Some philosophers – let’s call them “teleologists” – believe that there is an intimate connection between deontic terms like ‘required’, ‘ought’, and ‘permissible’, on the one hand, and evaluative terms like ‘better’ and ‘best’, on the other.
Teleologists face a problem with the intuitive idea of supererogation. This is the idea that sometimes we are not morally required to do the morally best thing, but may permissibly take options (e.g. to pursue our own personal projects, or to safeguard our own interests) that are morally suboptimal. As Sam Scheffler would say, we sometimes have an agent-centered prerogative to act in morally suboptimal ways.
In this post, I shall argue that two attempts at solving this problem – a simple threshold view, and a dual-ranking view – face serious intuitive difficulties. The best solution, I shall suggest, is not a dual-ranking view, but a triple-ranking view.
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