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    <title>FriendMachine Research Notes</title>
    <link>https://research.friendmachine.co/notes/</link>
    <description>Results from FriendMachine research, including their limits.</description>
    <language>en-us</language>
    <item>
      <title>When memory gets in the way</title>
      <link>https://research.friendmachine.co/notes/when-memory-gets-in-the-way/</link>
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      <pubDate>Mon, 19 Oct 2026 00:00:00 GMT</pubDate>
      <description>FriendMachine experiments on executable memory: recall and transfer differ, bounded reuse helps related tasks, and search priorities, learning costs and representation limits shape what an agent can do.</description>
    </item>
    <item>
      <title>Where knowing stops</title>
      <link>https://research.friendmachine.co/notes/where-knowing-stops/</link>
      <guid isPermaLink="true">https://research.friendmachine.co/notes/where-knowing-stops/</guid>
      <pubDate>Thu, 01 Oct 2026 00:00:00 GMT</pubDate>
      <description>A theme that runs through much of FriendMachine&apos;s research: finding the limits of what evidence can establish before asking how accurately a method works.</description>
    </item>
    <item>
      <title>Better models, same behavior</title>
      <link>https://research.friendmachine.co/notes/better-models-same-behavior/</link>
      <guid isPermaLink="true">https://research.friendmachine.co/notes/better-models-same-behavior/</guid>
      <pubDate>Wed, 30 Sep 2026 00:00:00 GMT</pubDate>
      <description>Results from Embodied Field Intelligence, a FriendMachine research agent: learned knowledge often improved in targeted tests while whole-task behavior did not, and what that suggests about credit assignment.</description>
    </item>
    <item>
      <title>The correct estimator lost</title>
      <link>https://research.friendmachine.co/notes/the-correct-estimator-lost/</link>
      <guid isPermaLink="true">https://research.friendmachine.co/notes/the-correct-estimator-lost/</guid>
      <pubDate>Tue, 29 Sep 2026 00:00:00 GMT</pubDate>
      <description>A more accurate reward estimate made a simulated foraging agent worse in some conditions. Separating learning from action strength, and adding a bounded reason to revisit old aversions, raised average return by about 40% on fresh tests.</description>
    </item>
    <item>
      <title>Peeking at your data can turn 5% false alarms into 60%</title>
      <link>https://research.friendmachine.co/notes/peeking-at-your-data/</link>
      <guid isPermaLink="true">https://research.friendmachine.co/notes/peeking-at-your-data/</guid>
      <pubDate>Sat, 26 Sep 2026 00:00:00 GMT</pubDate>
      <description>Why repeatedly checking a classical test inflates false alarms, how anytime-valid tests fix it, and the rate that limits how quickly any valid test can detect broken detailed balance.</description>
    </item>
    <item>
      <title>One bang can&apos;t sync your phones</title>
      <link>https://research.friendmachine.co/notes/one-bang-cant-sync-your-phones/</link>
      <guid isPermaLink="true">https://research.friendmachine.co/notes/one-bang-cant-sync-your-phones/</guid>
      <pubDate>Thu, 03 Sep 2026 00:00:00 GMT</pubDate>
      <description>How time-difference-of-arrival localization works, and why a single sound cannot both locate its source and synchronize recordings whose clocks disagree.</description>
    </item>
    <item>
      <title>Factorization is a scientific choice</title>
      <link>https://research.friendmachine.co/notes/factorization-is-a-scientific-choice/</link>
      <guid isPermaLink="true">https://research.friendmachine.co/notes/factorization-is-a-scientific-choice/</guid>
      <pubDate>Mon, 27 Jul 2026 00:00:00 GMT</pubDate>
      <description>Lessons from compiling a small world model into local message passing: how factoring and evidence decide exactness, why model repairs come in bundles, and why an experiment can beat more observation.</description>
    </item>
    <item>
      <title>One claim in fifteen survived</title>
      <link>https://research.friendmachine.co/notes/one-claim-in-fifteen-survived/</link>
      <guid isPermaLink="true">https://research.friendmachine.co/notes/one-claim-in-fifteen-survived/</guid>
      <pubDate>Sun, 26 Jul 2026 00:00:00 GMT</pubDate>
      <description>FriendMachine lets AI agents attempt frontier research and revisits the results as models improve. A July 2026 recheck kept roughly one of fifteen headline claims. Why we accept early errors, what failed, the rules we adopted, and how to read our current results.</description>
    </item>
    <item>
      <title>Robustness consumes possibility space</title>
      <link>https://research.friendmachine.co/notes/robustness-consumes-possibility-space/</link>
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      <pubDate>Fri, 17 Jul 2026 00:00:00 GMT</pubDate>
      <description>Viewing persistent identities as error-correcting codes maintained by a system&apos;s own dynamics, and why the classical sphere-packing bound limits how many robust identities a system can hold.</description>
    </item>
    <item>
      <title>Planning as a local fixed point</title>
      <link>https://research.friendmachine.co/notes/planning-as-a-local-fixed-point/</link>
      <guid isPermaLink="true">https://research.friendmachine.co/notes/planning-as-a-local-fixed-point/</guid>
      <pubDate>Thu, 16 Jul 2026 00:00:00 GMT</pubDate>
      <description>How an untrained agent that sees only a 5×5 window plans with almost entirely local updates, using a Bayes filter for beliefs and a linearly solvable value recursion run in log space, and what that achieves on small foraging gridworlds.</description>
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