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      <title>The Impossibility of Knowledge of Retrocognitive Knowledge · Gwern.net</title>
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      <description>Is it possible to prove the existence of retrocognition if precognition also exists, because precognition could be used to foresee any proof found of retrocognition? Does this also disprove precognition as well?</description>
      <author>Gwern</author>
      <pubDate>Tue, 06 Jun 2023 00:00:00 +0000</pubDate>
      <dc:date>2023-06-10T00:00:00Z</dc:date>
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      <category>fiction/science-fiction/time-travel</category>
      <category>philosophy/epistemology</category>
      <category>psychology/parapsychology</category>
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      <title>One Man’s Modus Ponens · Gwern.net</title>
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      <description>&lt;em&gt;One man’s modus ponens is another man’s modus tollens&lt;/em&gt; is a saying in Western philosophy encapsulating a common response to a logical proof which generalizes the &lt;em&gt;reductio ad absurdum&lt;/em&gt; and consists of rejecting a premise based on an implied conclusion. I explain it in more detail, provide examples, and a Bayesian gloss.</description>
      <author>Gwern</author>
      <pubDate>Tue, 01 May 2012 00:00:00 +0000</pubDate>
      <dc:date>2022-01-06T00:00:00Z</dc:date>
      <category>essay</category>
      <category>history</category>
      <category>insight-porn</category>
      <category>math</category>
      <category>philosophy/epistemology</category>
      <category>philosophy/logic</category>
      <category>sociology</category>
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      <title>On Seeing Through and Unseeing: The Hacker Mindset · Gwern.net</title>
      <link>https://gwern.net/unseeing</link>
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      <description>Defining the security/hacker mindset as extreme reductionism: ignoring the surface abstractions and limitations to treat a system as a source of parts to manipulate into a different system, with different (and usually unintended) capabilities.</description>
      <author>Gwern</author>
      <pubDate>Sun, 09 Dec 2012 00:00:00 +0000</pubDate>
      <dc:date>2021-05-04T00:00:00Z</dc:date>
      <category>essay</category>
      <category>cs/security</category>
      <category>insight-porn</category>
      <category>philosophy/ontology</category>
      <category>psychology/cognitive-bias</category>
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      <title>Solving Pascal’s Mugging with Dynamic Programming · Gwern.net</title>
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      <description>Attempt to resolve Pascal’s mugging by examining whether optimal policies with linear utility do in fact engage in ‘mugging’ behavior</description>
      <author>Gwern</author>
      <pubDate>Thu, 12 Sep 2019 00:00:00 +0000</pubDate>
      <dc:date>2019-10-07T00:00:00Z</dc:date>
      <category>essay</category>
      <category>cs/haskell</category>
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      <category>philosophy</category>
      <category>statistics/decision</category>
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      <title>Notes on Pascal’s Mugging · Gwern.net</title>
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      <description>Attempt to resolve Pascal’s mugging by proposing &amp;amp; justifying a linear prior probability which bounds losses.</description>
      <author>Gwern</author>
      <pubDate>Wed, 23 Dec 2009 00:00:00 +0000</pubDate>
      <dc:date>2019-09-13T00:00:00Z</dc:date>
      <category>essay</category>
      <category>philosophy</category>
      <category>transhumanism</category>
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      <title>On the Existence of Powerful Natural Languages · Gwern.net</title>
      <link>https://gwern.net/language</link>
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      <description>A common dream in philosophy and politics and religion is the idea of languages superior to evolved demotics, whether Latin or Lojban, which grant speakers greater insight into reality and rationality, analogous to well-known efficacy of mathematical sub-languages in solving problems. This dream fails because such languages gain power inherently from specialization.</description>
      <author>Gwern</author>
      <pubDate>Sun, 18 Dec 2016 00:00:00 +0000</pubDate>
      <dc:date>2019-05-05T00:00:00Z</dc:date>
      <category>essay</category>
      <category>fiction/science-fiction</category>
      <category>philosophy/epistemology</category>
      <category>psychology/cognitive-bias</category>
      <category>psychology/linguistics</category>
      <category>sociology/technology</category>
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      <title>The Narrowing Circle · Gwern.net</title>
      <link>https://gwern.net/narrowing-circle</link>
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      <description>Modern ethics excludes as many beings as it includes.</description>
      <author>Gwern</author>
      <pubDate>Tue, 24 Apr 2012 00:00:00 +0000</pubDate>
      <dc:date>2019-04-27T00:00:00Z</dc:date>
      <category>essay</category>
      <category>economics</category>
      <category>insight-porn</category>
      <category>philosophy/ethics</category>
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      <title>An Abortion Dialogue · Gwern.net</title>
      <link>https://gwern.net/abortion</link>
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      <description>Dialogue pointing out some difficulties of materialist objections to abortion.</description>
      <author>Gwern</author>
      <pubDate>Mon, 10 Nov 2008 00:00:00 +0000</pubDate>
      <dc:date>2019-03-05T00:00:00Z</dc:date>
      <category>essay</category>
      <category>genetics</category>
      <category>philosophy/ethics</category>
      <category>transhumanism</category>
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      <title>Charity is not about Helping · Gwern.net</title>
      <link>https://gwern.net/charity-is-not-about-helping</link>
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      <description>Simple cost-benefit: distributed computing considered harmful as scientific lemon projects run at high resource cost.</description>
      <author>Gwern</author>
      <pubDate>Thu, 15 Sep 2011 00:00:00 +0000</pubDate>
      <dc:date>2015-09-12T00:00:00Z</dc:date>
      <category>essay</category>
      <category>economics</category>
      <category>philosophy/ethics</category>
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      <title>Isomorphisms &amp; Meaning · Gwern.net</title>
      <link>https://gwern.net/isomorphism</link>
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      <description>Haskell juvenilia, reinventing entry-level math wheels, of no interest to anyone; investigating when two theories or representations &lt;em&gt;mean&lt;/em&gt; the same things.</description>
      <author>Gwern</author>
      <pubDate>Sat, 25 Apr 2009 00:00:00 +0000</pubDate>
      <dc:date>2015-01-03T00:00:00Z</dc:date>
      <category>essay</category>
      <category>cs</category>
      <category>philosophy</category>
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      <title>Ontological Pantheism · Gwern.net</title>
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      <description>Descartes’s God is pantheism; a reductio ad absurdum of his ontology</description>
      <author>Gwern</author>
      <pubDate>Mon, 09 Nov 2009 00:00:00 +0000</pubDate>
      <dc:date>2014-07-11T00:00:00Z</dc:date>
      <category>essay</category>
      <category>philosophy</category>
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      <title>Distinguishing sources of religion by their experiential differences · Gwern.net</title>
      <link>https://gwern.net/religious-experience</link>
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      <description>Does the convergence of religious experiences point to a shared truth?</description>
      <author>Gwern</author>
      <pubDate>Tue, 22 Dec 2009 00:00:00 +0000</pubDate>
      <dc:date>2012-10-09T00:00:00Z</dc:date>
      <category>essay</category>
      <category>philosophy</category>
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      <title>The Presocratic’s Logical Path to Atomism · Gwern.net</title>
      <link>https://gwern.net/atomism</link>
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      <description>How and why did they deduce atomism?</description>
      <author>Gwern</author>
      <pubDate>Sat, 06 Nov 2010 00:00:00 +0000</pubDate>
      <dc:date>2012-03-06T00:00:00Z</dc:date>
      <category>essay</category>
      <category>philosophy</category>
      <category>science/physics</category>
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      <title>Against the Miletians and the One True Element · Gwern.net</title>
      <link>https://gwern.net/miletian</link>
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      <description>Exploring consequences of material monism and conflict with observations</description>
      <author>Gwern</author>
      <pubDate>Fri, 17 Oct 2008 00:00:00 +0000</pubDate>
      <dc:date>2011-11-25T00:00:00Z</dc:date>
      <category>essay</category>
      <category>philosophy</category>
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      <title>Immoral Books · Gwern.net</title>
      <link>https://gwern.net/immoral-book</link>
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      <description>Argument that texts are neither moral nor immoral as they require active interpretation.</description>
      <author>Gwern</author>
      <pubDate>Sun, 24 Jan 2010 00:00:00 +0000</pubDate>
      <dc:date>2010-01-24T00:00:00Z</dc:date>
      <category>essay</category>
      <category>fiction/criticism</category>
      <category>fiction/gene-wolfe</category>
      <category>philosophy/ethics</category>
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      <title>On Disrespect · Gwern.net</title>
      <link>https://gwern.net/on-disrespect</link>
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      <description>An attempt to reinvent classic theories of social interaction as expressions of power</description>
      <author>Gwern</author>
      <pubDate>Mon, 09 Feb 2009 00:00:00 +0000</pubDate>
      <dc:date>2009-02-09T00:00:00Z</dc:date>
      <category>essay</category>
      <category>sociology</category>
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      <title>On Justifications · Gwern.net</title>
      <link>https://gwern.net/justification</link>
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      <description>Philosophical fiction or a prose poem about suffering innocents and the theodicy</description>
      <author>Gwern</author>
      <pubDate>Fri, 26 Sep 2008 00:00:00 +0000</pubDate>
      <dc:date>2009-01-16T00:00:00Z</dc:date>
      <category>essay</category>
      <category>fiction</category>
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