<?xml version="1.0" ?><entry xml:lang="en-us" xmlns="http://www.w3.org/2005/Atom" xmlns:planet="http://planet.intertwingly.net/"><id>https://blog.nelhage.com/post/systems-that-defy-understanding/</id><link href="https://blog.nelhage.com/post/systems-that-defy-understanding/" rel="alternate" type="text/html"/><title>Systems that defy detailed understanding</title><summary>Last week, I wrote about the mindset that computer systems can be understood, and behaviors can be explained, if we’re willing to dig deep enough into the stack of abstractions our software is built atop. Some of the ensuing discussion on Twitter and elsewhere lead me to write this followup, in which I want to run through a few classes of systems where I’ve found pursuing in-detail understanding of the system wasn’t the right answer.</summary><updated planet:format="February 22, 2020 08:00 PM">2020-02-22T20:00:00Z</updated><source><id>https://blog.nelhage.com/post/</id><author><name>Nelson Elhage</name></author><link href="https://blog.nelhage.com/post/" rel="alternate" type="text/html"/><link href="https://blog.nelhage.com/post/atom.xml" rel="self" type="application/rss+xml"/><subtitle>Recent content in Posts on Made of Bugs</subtitle><title>Posts on Made of Bugs</title><updated planet:format="September 15, 2026 08:37 PM">2026-09-15T20:37:03Z</updated><planet:format>rss20</planet:format><planet:bozo>false</planet:bozo><planet:items_per_page>60</planet:items_per_page><planet:name>Nelson Elhage</planet:name><planet:css-id>nelson-elhage</planet:css-id><planet:days_per_page>0</planet:days_per_page><planet:http_etag>&quot;5b2ae9eec2e293572f6ae5a000bd0161-ssl-df&quot;</planet:http_etag><planet:http_status>200</planet:http_status><planet:encoding>utf-8</planet:encoding></source></entry>