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VOL. I·NO. 01
TUESDAY, SEPTEMBER 29, 2026
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  1. 001Hacker NewsSEP · 27English

    Functional Decision Theory: A New Theory of Instrumental Rationality (2018)

    A 2018 paper introduces functional decision theory (FDT), a novel approach to instrumental rationality that treats decisions as outputs of mathematical functions optimizing for best outcomes. FDT outperforms causal decision theory and evidential decision theory across classic decision problems including Newcomb's problem, the smoking lesion problem, and Parfit's hitchhiker.

    By Yudkowsky; Eliezer; Soares; Nate