I argue that standard decision theories, namely causal decision theory and evidential decision theory, both are unsatisfactory. I devise a new decision theory, from which, under certain conditions, standard game theory can be derived.The full-text of this article is not currently available in ORA, but you may be able to access the article via the publisher copy link on this record page. Citation: Arntzenius, F. (2008). 'No regrets, or: Edith Piaf revamps decision theory', Erkenntnis 68(2), 277-297. The final publication is available at www.springerlink.co
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