Abstract

The account of indeterminacy is brought to bear on conditionals, both indicative conditionals and counterfactual conditionals. The existence of conditional propositions is easily secured on the theory of pleonastic propositions, and conditions are specified under which a conditional proposition is determinately true, determinately false, or indeterminate. These truth conditions generate a puzzle, in that the way we form partial beliefs in indeterminate conditional propositions is not what their truth conditions predict. The resolution makes an important concession to non-cognitivist accounts of indicative-conditional sentences.