Ed Spencer
2.7K posts

Ed Spencer
@edspencer
Engineer playing at the intersection of UI and AI. Tab maximalist.





Short musings on "cognitive debt" - I'm seeing this in my own work, where excessive unreviewed AI-generated code leads me to lose a firm mental model of what I've built, which then makes it harder to confidently make future decisions simonwillison.net/2026/Feb/15/co…


The biggest AI unlock for me this week, as someone who’s been writing code for 20 years: We can now do meaningful work from our phones.

🥇 This Week In React After 5 years of consistent work, we are not the most popular source of news in the React ecosystem 🥹 and growing

Time to consider not just human visitors, but to treat agents as first-class citizens. Cloudflare’s network now supports real-time content conversion to Markdown at the source using content negotiation headers. cfl.re/4ksZQ1S


Claude Code is the Inflection Point, What It Is, How We Use It, Industry Repercussions, Microsoft's Dilemma, Why Anthropic Is Winning. newsletter.semianalysis.com/p/claude-code-…









