<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>Henrick F. — Writing</title><description>Long-form essays and case studies on AI, engineering, and where things are going.</description><link>https://henrickf.com/</link><language>en-us</language><item><title>The Rebuild Tax: A 4-Signal Decision Rule for When Internal Tools Are Worth Building</title><link>https://henrickf.com/writing/the-rebuild-tax/</link><guid isPermaLink="true">https://henrickf.com/writing/the-rebuild-tax/</guid><description>Most teams build internal software for the wrong reason. Rebuild only when at least three of four signals fire: workflow drift, vendor lock-on-data, integration fan-out, and cost-per-seat slope.</description><pubDate>Wed, 29 Apr 2026 00:00:00 GMT</pubDate><category>Engineering</category></item></channel></rss>