Abstract: Metaphysical moral theories can be loosely be divided into theories of the Good or Right. Naturalistic theories can be said to be theories of the seemly — what is appropriate in a particular place and time. This chapter explains how rights and duties can fit within a theory of the seemly. You have a right to do something if you do not have a duty not to do it. You have a duty to do something if you would otherwise diverge from equilibrium play in the social contract currently operated by your society.

Keywords: rights, duty, moral responsibility, free will,