What's this about?
Simon Willison flips a common argument. People say "if you know how to write the code, it's faster to write it yourself than prompt an AI." He argues the exact opposite: if you know how to write it, typing it teaches you nothing — that's precisely the work to hand to a coding agent.
What exactly is the argument about?
The anti-agent case was always "prompting overhead beats typing for experts." Willison's inversion: coding has two parts — *deciding* what to write (the skill) and *typing* it (the labor). Agents commoditize the labor; the expert keeps the deciding. The people who benefit most from agents are the ones who need them least to know what's right.
What's the community saying?
1.4k likes, heavy quote-tweeting
- Experts largely agree, with the caveat that review is now the bottleneck.
- Skeptics: typing-it-yourself catches design flaws you miss when skimming a diff.