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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Pascal's mugging</span></span>
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<p>In <a href="Philosophy" title="Philosophy">philosophy</a>, <b>Pascal's mugging</b> is a <a href="Thought_experiment" title="Thought experiment">thought experiment</a> demonstrating a problem in expected utility maximization. A <a href="Rational_agent" title="Rational agent">rational agent</a> should choose actions whose outcomes, when weighted by their probability, have higher <a href="Utility" title="Utility">utility</a>. But some very unlikely outcomes may have very great utilities, and these utilities can grow faster than the probability diminishes. Hence the agent should focus more on vastly improbable cases with implausibly high rewards; this leads first to counter-intuitive choices, and then to incoherence as the utility of every choice becomes unbounded.
</p><p>The name refers to <a href="Pascal's_Wager" class="mw-redirect" title="Pascal's Wager">Pascal's Wager</a>, but unlike the wager, it does not require infinite rewards.<sup id="cite_ref-FOOTNOTEHäggström201682_1-0" class="reference"><a href="#cite_note-FOOTNOTEHäggström201682-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> This sidesteps many objections to the Pascal's Wager dilemma that are based on the nature of infinity.<sup id="cite_ref-FOOTNOTEBostrom2009_2-0" class="reference"><a href="#cite_note-FOOTNOTEBostrom2009-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="Problem_statement">Problem statement</h2></div>
<p>The term "Pascal's mugging" to refer to this problem was originally coined by <a href="Eliezer_Yudkowsky" title="Eliezer Yudkowsky">Eliezer Yudkowsky</a> in the <i><a href="LessWrong" title="LessWrong">LessWrong</a></i> forum.<sup id="cite_ref-FOOTNOTEYudkowsky2007_3-0" class="reference"><a href="#cite_note-FOOTNOTEYudkowsky2007-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTEBostrom2009_2-1" class="reference"><a href="#cite_note-FOOTNOTEBostrom2009-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Philosopher <a href="Nick_Bostrom" title="Nick Bostrom">Nick Bostrom</a> later elaborated the thought experiment in the form of a fictional dialogue.<sup id="cite_ref-FOOTNOTEBostrom2009_2-2" class="reference"><a href="#cite_note-FOOTNOTEBostrom2009-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Subsequently, other authors published their own sequels to the events of this first dialogue, adopting the same literary style.<sup id="cite_ref-FOOTNOTEBalfour2021_4-0" class="reference"><a href="#cite_note-FOOTNOTEBalfour2021-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTERussell2022_5-0" class="reference"><a href="#cite_note-FOOTNOTERussell2022-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>
</p><p>In Bostrom's description,<sup id="cite_ref-FOOTNOTEBostrom2009_2-3" class="reference"><a href="#cite_note-FOOTNOTEBostrom2009-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> <a href="Blaise_Pascal" title="Blaise Pascal">Blaise Pascal</a> is accosted by a mugger who has forgotten their weapon. However, the mugger proposes a deal: the philosopher gives them his wallet, and in exchange the mugger will return twice the amount of money tomorrow. Pascal declines, pointing out that it is unlikely the deal will be honoured. The mugger then continues naming higher rewards, pointing out that even if it is just one chance in 1000 that they will be honourable, it would make sense for Pascal to make a deal for a 2000 times return. Pascal responds that the probability of that high return is even lower than one in 1000. The mugger argues back that for any low but strictly greater than 0 probability of being able to pay back a large amount of money (or pure utility) there exists a finite amount that makes it rational to take the bet. In one example, the mugger succeeds by promising Pascal 1,000 <a href="Orders_of_magnitude_(numbers)#1015" title="Orders of magnitude (numbers)">quadrillion</a> happy days of life. Convinced by the argument, Pascal gives the mugger the wallet.
</p><p>In one of Yudkowsky's examples, the mugger succeeds by saying "give me five dollars, or I'll use my magic powers from outside <a href="The_Matrix" title="The Matrix">the Matrix</a> to run a <a href="Turing_machine" title="Turing machine">Turing machine</a> that simulates and kills <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 3\uparrow \uparrow \uparrow \uparrow 3}">
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</math></span><img src="./27da329dc9e07ea13b10da21277ffef60a263537.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:8.265ex; height:2.509ex;" alt="{\displaystyle 3\uparrow \uparrow \uparrow \uparrow 3}" loading="lazy"></span> people". Here, the number <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 3\uparrow \uparrow \uparrow \uparrow 3}">
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<mstyle displaystyle="true" scriptlevel="0">
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<mo stretchy="false">↑<!-- ↑ -->↑<!-- ↑ -->↑<!-- ↑ -->↑<!-- ↑ --></mo>
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<annotation encoding="application/x-tex">{\displaystyle 3\uparrow \uparrow \uparrow \uparrow 3}</annotation>
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</math></span><img src="./27da329dc9e07ea13b10da21277ffef60a263537.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:8.265ex; height:2.509ex;" alt="{\displaystyle 3\uparrow \uparrow \uparrow \uparrow 3}" loading="lazy"></span> uses <a href="Knuth's_up-arrow_notation" title="Knuth's up-arrow notation">Knuth's up-arrow notation</a>; writing the number out in base 10 would require enormously more writing material than there are atoms in the known universe.<sup id="cite_ref-FOOTNOTEYudkowsky2007_3-1" class="reference"><a href="#cite_note-FOOTNOTEYudkowsky2007-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>
</p><p>The supposed paradox results from two inconsistent views. On the one side, by multiplying an <a href="Utilitarianism" title="Utilitarianism">expected utility</a> calculation, assuming loss of five dollars to be valued at <span class="nowrap"><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle f}">
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<mi>f</mi>
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<annotation encoding="application/x-tex">{\displaystyle f}</annotation>
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</math></span><img src="./132e57acb643253e7810ee9702d9581f159a1c61.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.279ex; height:2.509ex;" alt="{\displaystyle f}" loading="lazy"></span></span>, loss of a life to be valued at <span class="nowrap"><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle l}">
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<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>l</mi>
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<annotation encoding="application/x-tex">{\displaystyle l}</annotation>
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</math></span><img src="./829091f745070b9eb97a80244129025440a1cfac.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:0.693ex; height:2.176ex;" alt="{\displaystyle l}" loading="lazy"></span>,</span> and probability that the mugger is telling the truth at <span class="nowrap"><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t}">
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<mi>t</mi>
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<annotation encoding="application/x-tex">{\displaystyle t}</annotation>
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</math></span><img src="./65658b7b223af9e1acc877d848888ecdb4466560.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:0.84ex; height:2.009ex;" alt="{\displaystyle t}" loading="lazy"></span>,</span> the solution is to give the money if and only if <span class="nowrap"><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle (3\uparrow \uparrow \uparrow \uparrow 3)\times t\times l>f}">
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<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mo stretchy="false">(</mo>
<mn>3</mn>
<mo stretchy="false">↑<!-- ↑ -->↑<!-- ↑ -->↑<!-- ↑ -->↑<!-- ↑ --></mo>
<mn>3</mn>
<mo stretchy="false">)</mo>
<mo>×<!-- × --></mo>
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<mi>l</mi>
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<mi>f</mi>
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<annotation encoding="application/x-tex">{\displaystyle (3\uparrow \uparrow \uparrow \uparrow 3)\times t\times l>f}</annotation>
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</math></span><img src="./5efa96cb50b7b984c65d76ec4790c019ae0edc6f.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:21.665ex; height:2.843ex;" alt="{\displaystyle (3\uparrow \uparrow \uparrow \uparrow 3)\times t\times l>f}" loading="lazy"></span>.</span> Assuming that <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle l}">
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<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>l</mi>
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<annotation encoding="application/x-tex">{\displaystyle l}</annotation>
</semantics>
</math></span><img src="./829091f745070b9eb97a80244129025440a1cfac.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:0.693ex; height:2.176ex;" alt="{\displaystyle l}" loading="lazy"></span> is higher than <span class="nowrap"><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle f}">
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<mrow class="MJX-TeXAtom-ORD">
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<mi>f</mi>
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<annotation encoding="application/x-tex">{\displaystyle f}</annotation>
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</math></span><img src="./132e57acb643253e7810ee9702d9581f159a1c61.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.279ex; height:2.509ex;" alt="{\displaystyle f}" loading="lazy"></span>,</span> so long as <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t}">
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<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>t</mi>
</mstyle>
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<annotation encoding="application/x-tex">{\displaystyle t}</annotation>
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</math></span><img src="./65658b7b223af9e1acc877d848888ecdb4466560.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:0.84ex; height:2.009ex;" alt="{\displaystyle t}" loading="lazy"></span> is higher than <span class="nowrap"><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 1/(3\uparrow \uparrow \uparrow \uparrow 3)}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
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<mn>1</mn>
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<annotation encoding="application/x-tex">{\displaystyle 1/(3\uparrow \uparrow \uparrow \uparrow 3)}</annotation>
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</math></span><img src="./ea260704f8858e14d8a3d12a8f75e6ee801af95c.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:12.399ex; height:2.843ex;" alt="{\displaystyle 1/(3\uparrow \uparrow \uparrow \uparrow 3)}" loading="lazy"></span>,</span> which is assumed to be true,<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>note 1<span class="cite-bracket">]</span></a></sup> it is considered rational to pay the mugger. On the other side of the argument, paying the mugger is intuitively irrational due to its exploitability. If the person being mugged agrees to this sequence of logic, then they can be exploited repeatedly for all of their money, resulting in a <a href="Dutch_book" class="mw-redirect" title="Dutch book">Dutch-book</a>, which is typically considered irrational. Views on which of these arguments is logically correct differ.<sup id="cite_ref-FOOTNOTEYudkowsky2007_3-2" class="reference"><a href="#cite_note-FOOTNOTEYudkowsky2007-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>
</p><p>Moreover, in many reasonable-seeming decision systems, Pascal's mugging causes the expected utility of any action to fail to converge, as an unlimited chain of successively dire scenarios similar to Pascal's mugging would need to be factored in.<sup id="cite_ref-de_blanc_8-0" class="reference"><a href="#cite_note-de_blanc-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Marray_9-0" class="reference"><a href="#cite_note-Marray-9"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>
</p><p>Some of the arguments concerning this paradox affect not only the expected utility maximization theory, but may also apply to other theoretical systems, such as <a href="Consequentialism" title="Consequentialism">consequentialist ethics</a>, for example.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>note 2<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Consequences_and_remedies">Consequences and remedies</h2></div>
<p>Philosopher <a href="Nick_Bostrom" title="Nick Bostrom">Nick Bostrom</a> argues that Pascal's mugging, like Pascal's wager, suggests that giving a <a href="Superintelligence" title="Superintelligence">superintelligent</a> artificial intelligence a flawed decision theory could be disastrous.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> Pascal's mugging may also be relevant when considering low-probability, high-stakes events such as <a href="Existential_risk" class="mw-redirect" title="Existential risk">existential risk</a> or charitable interventions with a low probability of success but extremely high rewards. Common sense seems to suggest that spending effort on too unlikely scenarios is irrational.
</p><p>One advocated remedy might be to only use bounded utility functions: rewards cannot be arbitrarily large.<sup id="cite_ref-de_blanc_8-1" class="reference"><a href="#cite_note-de_blanc-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> Another approach is to use <a href="Bayesian_inference" title="Bayesian inference">Bayesian reasoning</a> to (qualitatively) judge the quality of evidence and probability estimates rather than naively calculate expectations.<sup id="cite_ref-Karnofsky_6-1" class="reference"><a href="#cite_note-Karnofsky-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Other approaches are to penalize the prior probability of hypotheses that argue that we are in a surprisingly unique position to affect large numbers of other people who cannot symmetrically affect us,<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>note 3<span class="cite-bracket">]</span></a></sup> reject providing the probability of a payout first,<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> or abandon quantitative decision procedures in the presence of extremely large risks.<sup id="cite_ref-Marray_9-1" class="reference"><a href="#cite_note-Marray-9"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2></div>
<ul><li><a href="Decision_theory" title="Decision theory">Decision theory</a></li>
<li><a href="Expected_utility" class="mw-redirect" title="Expected utility">Expected utility</a></li>
<li><a href="Scope_neglect" title="Scope neglect">Scope neglect</a></li>
<li><a href="St._Petersburg_paradox" title="St. Petersburg paradox">St. Petersburg paradox</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2></div>
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<li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text">While it may seem very intuitive that the probability <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t}">
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</math></span><img src="./65658b7b223af9e1acc877d848888ecdb4466560.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:0.84ex; height:2.009ex;" alt="{\displaystyle t}" loading="lazy"></span> cannot be as small as <span class="nowrap"><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle (3\uparrow \uparrow \uparrow \uparrow 3)^{-1}}">
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<annotation encoding="application/x-tex">{\displaystyle (3\uparrow \uparrow \uparrow \uparrow 3)^{-1}}</annotation>
</semantics>
</math></span><img src="./3d1a31b4bd5975e6cd5e8049099260c1053d71e9.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:12.407ex; height:3.176ex;" alt="{\displaystyle (3\uparrow \uparrow \uparrow \uparrow 3)^{-1}}" loading="lazy"></span>,</span> this is not necessarily true. As a notable example, it is false in Bayesian models for this problem:<sup id="cite_ref-Karnofsky_6-0" class="reference"><a href="#cite_note-Karnofsky-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> There, the prior probability of the mugger’s claim being correct decreases with the extraordinariness of his claim. If his claim is as extraordinary as in this case, its probability will also be extraordinarily small in a Bayesian model. Furthermore, a frequentist may estimate the probability of the mugger's threat being realized as equal to 0, since no realization of such an extraordinary threat has ever been observed.</span>
</li>
<li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text">A "consequentialist version" of Pascal's mugging was proposed by Bradley Monton as follows: A strange person hands you a baby and asks you to torture it, telling you that the torture will prevent significant unjust suffering of a large number of sentient creatures in some distant galaxy. While the probability is very low that torturing the baby will prevent the suffering, as long as the strange person makes the number of claimed distant-galaxy creatures high enough, according to consequentialism equipped with probabilistic models in which the probability that the torturing prevents the suffering does not decrease if the number of galaxies is increased (notably Bayesian models do have a decreasing probability for increasing numbers of galaxies because the prior will necessarily concentrate around some fixed number of galaxies), you should torture the baby.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup></span>
</li>
<li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text">This 'leverage penalty' was first proposed by <a href="Robin_Hanson" title="Robin Hanson">Robin Hanson</a> in a comment on Yudkowsky's original statement of the problem;<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> Yudkowsky noted that this would imply refusing to believe in theories implying we can affect vastly many others, even in the face of what might otherwise look like overwhelming observational evidence for the theory.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup></span>
</li>
</ol></div></div>
<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
<div class="reflist">
<div class="mw-references-wrap mw-references-columns"><ol class="references">
<li id="cite_note-FOOTNOTEHäggström201682-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEHäggström201682_1-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFHäggström2016">Häggström 2016</a>, p. 82.</span>
</li>
<li id="cite_note-FOOTNOTEBostrom2009-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-FOOTNOTEBostrom2009_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-FOOTNOTEBostrom2009_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-FOOTNOTEBostrom2009_2-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-FOOTNOTEBostrom2009_2-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><a href="#CITEREFBostrom2009">Bostrom 2009</a>.</span>
</li>
<li id="cite_note-FOOTNOTEYudkowsky2007-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-FOOTNOTEYudkowsky2007_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-FOOTNOTEYudkowsky2007_3-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-FOOTNOTEYudkowsky2007_3-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><a href="#CITEREFYudkowsky2007">Yudkowsky 2007</a>.</span>
</li>
<li id="cite_note-FOOTNOTEBalfour2021-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEBalfour2021_4-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFBalfour2021">Balfour 2021</a>.</span>
</li>
<li id="cite_note-FOOTNOTERussell2022-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTERussell2022_5-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFRussell2022">Russell 2022</a>.</span>
</li>
<li id="cite_note-Karnofsky-6"><span class="mw-cite-backlink">^ <a href="#cite_ref-Karnofsky_6-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Karnofsky_6-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">Holden Karnofsky, Why We Can’t Take Expected Value Estimates Literally (Even When They’re Unbiased). GiveWell Blog August 18, 2011
<a rel="nofollow" class="external free" href="http://blog.givewell.org/2011/08/18/why-we-cant-take-expected-value-estimates-literally-even-when-theyre-unbiased/">http://blog.givewell.org/2011/08/18/why-we-cant-take-expected-value-estimates-literally-even-when-theyre-unbiased/</a></span>
</li>
<li id="cite_note-de_blanc-8"><span class="mw-cite-backlink">^ <a href="#cite_ref-de_blanc_8-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-de_blanc_8-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">De Blanc, Peter. Convergence of Expected Utilities with Algorithmic Probability Distributions (2007), <style data-mw-deduplicate="TemplateStyles:r1238218222">
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</style><a href="ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/0712.4318">0712.4318</a></span></span>
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<li id="cite_note-Marray-9"><span class="mw-cite-backlink">^ <a href="#cite_ref-Marray_9-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Marray_9-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">Kieran Marray, Dealing With Uncertainty in Ethical Calculations of Existential Risk, Presented at The Economic and Social Research Council Climate Ethics and Climate Economics Workshop Series: Workshop Five - Risk and the Culture of Science, May 2016 <a rel="nofollow" class="external free" href="http://www.nottingham.ac.uk/climateethicseconomics/documents/papers-workshop-5/marray.pdf">http://www.nottingham.ac.uk/climateethicseconomics/documents/papers-workshop-5/marray.pdf</a></span>
</li>
<li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><cite id="CITEREFMonton2019" class="citation journal cs1">Monton, Bradley (2019). <a rel="nofollow" class="external text" href="http://hdl.handle.net/2027/spo.3521354.0019.018">"How to Avoid Maximizing Expected Utility"</a>. <i>Philosophers' Imprint</i>. <b>19</b> (18): <span class="nowrap">1–</span>25. <a href="Hdl_(identifier)" class="mw-redirect" title="Hdl (identifier)">hdl</a>:<a rel="nofollow" class="external text" href="https://hdl.handle.net/2027%2Fspo.3521354.0019.018">2027/spo.3521354.0019.018</a>.</cite></span>
</li>
<li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><cite id="CITEREFBostrom2014" class="citation book cs1">Bostrom, Nick (2014). "Choosing the Criteria for Choosing". <i><a href="Superintelligence%3A_Paths%2C_Dangers%2C_Strategies" title="Superintelligence: Paths, Dangers, Strategies">Superintelligence: Paths, Dangers, Strategies</a></i>. Oxford: Oxford University Press. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-0199678112</bdi>.</cite> "Decision Theory" section.</span>
</li>
<li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><cite id="CITEREFCowenHigh1988" class="citation journal cs1">Cowen, Tyler; High, Jack (1988). "Time, Bounded Utility, and the St. Petersburg Paradox". <i>Theory and Decision</i>. <b>25</b> (3): <span class="nowrap">219–</span>223. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2FBF00133163">10.1007/BF00133163</a>. <a href="S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:120584258">120584258</a>.</cite></span>
</li>
<li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><a href="Robin_Hanson" title="Robin Hanson">Robin Hanson</a> (21 October 2007), <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160219020522/http://lesswrong.com/lw/kd/pascals_mugging_tiny_probabilities_of_vast/#thingrow_t1_ui9">comment</a> on Eliezer Yudkowsky's "Pascal's Mugging: Tiny Probabilities of Vast Utilities", <a href="LessWrong" title="LessWrong">LessWrong</a>: "People have been talking about assuming that states with many people hurt have a low (prior) probability. It might be more promising to assume that states with many people hurt have a low <i>correlation</i> with what any random person claims to be able to effect."</span>
</li>
<li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><cite id="CITEREFTomasik2016" class="citation web cs1">Tomasik, Brian (June 2016). <a rel="nofollow" class="external text" href="https://longtermrisk.org/files/how-the-simulation-argument-dampens-future-fanaticism.pdf">"How the Simulation Argument Dampens Future Fanaticism"</a> <span class="cs1-format">(PDF)</span>. <i>Center on Long-Term Risk</i>. pp. <span class="nowrap">3–</span>4. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20211123012535/https://longtermrisk.org/files/how-the-simulation-argument-dampens-future-fanaticism.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 2021-11-23.</cite></span>
</li>
<li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><cite id="CITEREFYudkowsky2013" class="citation journal cs1">Yudkowsky, Eliezer (2013-05-08). <a rel="nofollow" class="external text" href="http://lesswrong.com/lw/h8k/pascals_muggle_infinitesimal_priors_and_strong/">"Pascal's Muggle: Infinitesimal Priors and Strong Evidence"</a>. <i><a href="LessWrong" title="LessWrong">LessWrong</a></i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160627080608/http://lesswrong.com/lw/h8k/pascals_muggle_infinitesimal_priors_and_strong/">Archived</a> from the original on 2016-06-27.</cite></span>
</li>
<li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><cite id="CITEREFBaumann2009" class="citation journal cs1">Baumann, Peter (2009). <a rel="nofollow" class="external text" href="https://www.gwern.net/docs/statistics/decision/2009-baumann.pdf">"Counting on numbers"</a> <span class="cs1-format">(PDF)</span>. <i>Analysis</i>. <b>69</b> (3): <span class="nowrap">446–</span>448. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fanalys%2Fanp061">10.1093/analys/anp061</a>. <a href="JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/40607656">40607656</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20191121223135/https://www.gwern.net/docs/statistics/decision/2009-baumann.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 2019-11-21.</cite></span>
</li>
</ol></div></div>
<div class="mw-heading mw-heading2"><h2 id="Sources">Sources</h2></div>
<ul><li><cite id="CITEREFBalfour2021" class="citation journal cs1">Balfour, Dylan (2021). <a rel="nofollow" class="external text" href="https://philarchive.org/archive/BALPMS">"Pascal's Mugger Strikes Again"</a>. <i><a href="Utilitas" title="Utilitas">Utilitas</a></i>. <b>33</b> (1): <span class="nowrap">118–</span>124. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1017%2Fs0953820820000357">10.1017/s0953820820000357</a>. <a href="S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:229475903">229475903</a>.</cite></li>
<li><cite id="CITEREFBostrom2009" class="citation journal cs1"><a href="Nick_Bostrom" title="Nick Bostrom">Bostrom, Nick</a> (2009). <a rel="nofollow" class="external text" href="http://www.nickbostrom.com/papers/pascal.pdf">"Pascal's mugging"</a> <span class="cs1-format">(PDF)</span>. <i><a href="Analysis" title="Analysis">Analysis (journal)</a></i>. <b>69</b> (3): <span class="nowrap">443–</span>445. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fanalys%2Fanp062">10.1093/analys/anp062</a>. <a href="JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/40607655">40607655</a>.</cite></li>
<li><cite id="CITEREFHäggström2016" class="citation book cs1"><a href="Olle_H%C3%A4ggstr%C3%B6m" title="Olle Häggström">Häggström, Olle</a> (2016). <a rel="nofollow" class="external text" href="https://academic.oup.com/book/26977"><i>Here Be Dragons: Science, Technology and the Future of Humanity</i></a>. Oxford University Press. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Facprof%3Aoso%2F9780198723547.001.0001">10.1093/acprof:oso/9780198723547.001.0001</a>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-0-19-872354-7</bdi>.</cite></li>
<li><cite id="CITEREFRussell2022" class="citation web cs1">Russell, Jeffrey Sanford (December 2022). <a rel="nofollow" class="external text" href="https://philpapers.org/archive/RUSPFP-3.pdf">"Planning for Pascal's Mugging"</a> <span class="cs1-format">(PDF)</span>. <i><a href="PhilPapers" title="PhilPapers">PhilPapers</a></i>.</cite></li>
<li><cite id="CITEREFYudkowsky2007" class="citation journal cs1"><a href="Eliezer_Yudkowsky" title="Eliezer Yudkowsky">Yudkowsky, Eliezer</a> (19 October 2007). <a rel="nofollow" class="external text" href="https://www.lesswrong.com/posts/a5JAiTdytou3Jg749/pascal-s-mugging-tiny-probabilities-of-vast-utilities">"Pascal's Mugging: Tiny Probabilities of Vast Utilities"</a>. <i><a href="LessWrong" title="LessWrong">LessWrong</a></i>.</cite><span class="cs1-maint citation-comment"><code class="cs1-code">{{cite journal}}</code>: CS1 maint: ref duplicates default (link)</span></li></ul>
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<ul><li><a href="Aella_(writer)" title="Aella (writer)">Aella</a></li>
<li><a href="Slate_Star_Codex" title="Slate Star Codex">Scott Alexander</a></li>
<li><a href="Paul_Christiano" title="Paul Christiano">Paul Christiano</a></li>
<li><a href="Wei_Dai" title="Wei Dai">Wei Dai</a></li>
<li><a href="Robin_Hanson" title="Robin Hanson">Robin Hanson</a></li>
<li><a href="Zvi_Mowshowitz" title="Zvi Mowshowitz">Zvi Mowshowitz</a></li>
<li><a href="Eliezer_Yudkowsky" title="Eliezer Yudkowsky">Eliezer Yudkowsky</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Organizations</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Center_for_Applied_Rationality" title="Center for Applied Rationality">Center for Applied Rationality</a></li>
<li><a href="Future_of_Humanity_Institute" title="Future of Humanity Institute">Future of Humanity Institute</a></li>
<li><a href="Machine_Intelligence_Research_Institute" title="Machine Intelligence Research Institute">Machine Intelligence Research Institute</a></li>
<li><a href="MetaMed" title="MetaMed">MetaMed</a></li>
<li><a href="Zizians" title="Zizians">Zizians</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Works</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><i><a href="Harry_Potter_and_the_Methods_of_Rationality" title="Harry Potter and the Methods of Rationality">Harry Potter and the Methods of Rationality</a></i></li>
<li><i><a href="Rationality%3A_From_AI_to_Zombies" class="mw-redirect" title="Rationality: From AI to Zombies">Rationality: From AI to Zombies</a></i></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Concepts</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Friendly_artificial_intelligence" title="Friendly artificial intelligence">Friendly artificial intelligence</a></li>
<li><a href="Roko's_basilisk" title="Roko's basilisk">Roko's basilisk</a></li>
<li><a href="Waluigi_effect" title="Waluigi effect">Waluigi effect</a></li></ul>
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