2020
DOI: 10.5840/jphil2020117516
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Cheating Death in Damascus

Abstract: Evidential Decision Theory (EDT) and Causal Decision Theory (CDT) are the leading contenders as theories of rational action, but both face counterexamples. We present some new counterexamples, including one in which the optimal action is causally dominated. We also present a novel decision theory, Functional Decision Theory (FDT), which simultaneously solves both sets of counterexamples. Instead of considering which physical action of theirs would give rise to the best outcomes, FDT agents consider which outpu… Show more

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Cited by 12 publications
(3 citation statements)
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“…In light of the issues discussed so far, one may question whether traditional approaches to decision and game theory are an ideal fit for the problem of designing artificially intelligent agents. One concrete new form of decision theory that has been proposed in this context is that of functional decision theory (FDT) (Levinstein and Soares 2017). This is in contrast to the more standard decision theory that dominates economic theory, known in the philosophy literature as causal decision theory (CDT), but also in contrast to evidential decision theory (EDT), another theory that has been thoroughly studied in the philosophy literature.…”
Section: Beyond Causal Decision Theorymentioning
confidence: 99%
“…In light of the issues discussed so far, one may question whether traditional approaches to decision and game theory are an ideal fit for the problem of designing artificially intelligent agents. One concrete new form of decision theory that has been proposed in this context is that of functional decision theory (FDT) (Levinstein and Soares 2017). This is in contrast to the more standard decision theory that dominates economic theory, known in the philosophy literature as causal decision theory (CDT), but also in contrast to evidential decision theory (EDT), another theory that has been thoroughly studied in the philosophy literature.…”
Section: Beyond Causal Decision Theorymentioning
confidence: 99%
“…For recent philosophically accessible formulations of fdt , see Levinstein and Soares (2020) and Soares and Yudkowsky (2018). …”
mentioning
confidence: 99%
“…This is seen clearly in prediction cases like Newcomb's problem, where fdt views changes to the output of one's decision algorithm as sometimes necessitating changes to what has been predicted (where such an effect is due to the decision algorithm the agent “accepts” and not the act the agent performs). (See Soares and Yudkowsky (2018) and Levinstein and Soares (2020) for more on this aspect of fdt .) Nevertheless, as we have emphasized in the text, gac also differs significantly from acceptance‐based rule consequentialism.…”
mentioning
confidence: 99%