| http://www.w3.org/ns/prov#value | - Utilitas 20 (1):59-64.I discuss Philip Pettit???s argument that appreciation is not a proper response to value because it fails to satisfy the non-iteration constraint, according to which, where V is a value and R is a response to value, R-ing V must not be distinct from R-ing R-ing V. After motivating the non-iteration constraint and conceding that appreciation fails to satisfy the constraint, I
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