<?xml version='1.0' encoding='utf-8'?>
<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0">
  <channel>
    <title>Matt Duffy — Log</title>
    <link>https://mattduffy.fyi/log/</link>
    <description>Notes from Matt Duffy.</description>
    <language>en-us</language>
    <atom:link href="https://mattduffy.fyi/log/feed.xml" rel="self" type="application/rss+xml" />
    <item>
      <title>Effective decisions per token</title>
      <link>https://mattduffy.fyi/log/#2026-10-19-effective-decisions-per-token</link>
      <guid>https://mattduffy.fyi/log/#2026-10-19-effective-decisions-per-token</guid>
      <description>&lt;p&gt;I crave brevity. The new metric is effective decisions per token. Comms and information flow has been the ultimate vexing institutional problem. It&amp;#x27;s much worse now. Old proxies for what made a good employee no longer hold. It&amp;#x27;s a cultural revolution.&lt;/p&gt;&lt;p class="log-music"&gt;Music: &lt;a href="https://www.youtube.com/watch?v=By9-6haIRgQ"&gt;Shook — You Were Bigger Than Life&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Mon, 19 Oct 2026 00:00:00 -0400</pubDate>
    </item>
    <item>
      <title>What telemetry can’t tell you</title>
      <link>https://mattduffy.fyi/log/#2026-09-09-what-telemetry-cant-tell-you</link>
      <guid>https://mattduffy.fyi/log/#2026-09-09-what-telemetry-cant-tell-you</guid>
      <description>&lt;p&gt;Operations modeling forces you to make the same choice again and again: what do you aggregate and abstract, and what should you separate and treat differently. Telemetry can&amp;#x27;t help you find the answer. RPMs, g-forces, control inputs tell you what happened, but very little about why. The why tells you whether your operations is part of the normal pool, or whether it&amp;#x27;s something abnormal, isolated, and unique that needs to be modeled differently. It&amp;#x27;s not in the SQL database. You have to go to the ground for it.&lt;/p&gt;&lt;p class="log-music"&gt;Music: &lt;a href="https://www.youtube.com/watch?v=mlqjZnVxew8"&gt;Russian Circles — Eluvial&lt;/a&gt;&lt;/p&gt;</description>
      <pubDate>Wed, 09 Sep 2026 00:00:00 -0400</pubDate>
    </item>
  </channel>
</rss>