https://yann.regis-gianas.org/en/changes/Major revisions across the living essays, newest first.enhttps://yann.regis-gianas.org/en/posts/keep-the-engineer-in-the-loop/https://yann.regis-gianas.org/en/posts/keep-the-engineer-in-the-loop/#v2.0Wed, 12 Aug 2026 00:00:00 +0000Rebuilt on a problem-driven spine after the author judged the argument unclear: the introduction now states the objective and a roadmap; a new section makes explicit that review means judging load-bearing decisions when they are taken, not reading every line; the mechanism is recast as four named problems, each with the experimental tool that starts to answer it and the residual it leaves; and the essay ends on the four open problems. Worth a re-read; the word cap is raised to 2700 as a recorded decision, since the four problem-tool-residual arguments earn the length.https://yann.regis-gianas.org/en/posts/the-loop-i-run/https://yann.regis-gianas.org/en/posts/the-loop-i-run/#v1.0Wed, 05 Aug 2026 00:00:00 +0000First published version. Splits out of the hub essay, which keeps the general argument for loops.https://yann.regis-gianas.org/en/posts/keep-the-engineer-in-the-loop/https://yann.regis-gianas.org/en/posts/keep-the-engineer-in-the-loop/#v1.0Wed, 05 Aug 2026 00:00:00 +0000First published version. Splits out of the hub essay, which keeps the loop and hands the engineer's mental model to this one.https://yann.regis-gianas.org/en/posts/what-the-proof-found/https://yann.regis-gianas.org/en/posts/what-the-proof-found/#v1.0Wed, 05 Aug 2026 00:00:00 +0000First published version. One recorded run of the loop, walked activity by activity, with what was on the screen at each one.https://yann.regis-gianas.org/en/posts/harness-not-output/https://yann.regis-gianas.org/en/posts/harness-not-output/#v4.0Wed, 29 Jul 2026 00:00:00 +0000Restructured as a chain of questions, each answered before the next is asked. The argument and its citations are the same, and the section on progress is new in substance: it states the three conditions under which a measure of progress exists at all, and adds the rule that was missing, which is knowing when to stop iterating and change direction.https://yann.regis-gianas.org/en/posts/harness-not-output/https://yann.regis-gianas.org/en/posts/harness-not-output/#v3.0Tue, 28 Jul 2026 00:00:00 +0000The essay says which loop it defends, generate-check-decide rather than edit-run-observe, and rests it on measured evidence plus the ceiling an imperfect verifier imposes.https://yann.regis-gianas.org/en/posts/harness-not-output/https://yann.regis-gianas.org/en/posts/harness-not-output/#v2.0Wed, 22 Jul 2026 00:00:00 +0000Split in three. This essay keeps the general argument, why the durable object is the loop around a probabilistic agent rather than its output, and hands the concrete loop to The loop I run and the engineer's mental model to Keep the engineer in the loop.https://yann.regis-gianas.org/en/posts/harness-not-output/https://yann.regis-gianas.org/en/posts/harness-not-output/#v1.0Fri, 22 May 2026 00:00:00 +0000First published version.https://yann.regis-gianas.org/en/posts/code-agent-crisis/https://yann.regis-gianas.org/en/posts/code-agent-crisis/#v1.0Sun, 10 May 2026 00:00:00 +0000First published version.https://yann.regis-gianas.org/en/posts/hello-world/https://yann.regis-gianas.org/en/posts/hello-world/#v1.0Thu, 02 Apr 2026 00:00:00 +0000First published version.