Long notes on building software and applied AI systems.https://acvx.es/enhttps://acvx.es/en/essays/evaluate-before-the-demo/https://acvx.es/en/essays/evaluate-before-the-demo/A demo built on three hand-picked questions convinces anyone and tells you nothing. What decides whether an AI system can be switched on is an evaluation set written before the prototype.Thu, 27 Aug 2026 00:00:00 GMThttps://acvx.es/en/essays/syncing-without-coverage/https://acvx.es/en/essays/syncing-without-coverage/Syncing field work without a network forces decisions about who generates identifiers, which clock wins, and what happens to a signature when the document changes underneath it.Thu, 18 Jun 2026 00:00:00 GMT