The Mythical Man-Month in the Age of AI
- ID
- 40023
- Status
- summarized
- Published
- 27 Oct 2026, 2:25 PM
- Fetched
- 27 Oct 2026, 11:50 PM
- Provider
- Hacker News
- Category
- dev-community
- Original URL
- https://j11g.com/the-mythical-man-month-in-the-age-of-ai
- Source URL
- https://hnrss.org/best
Summary
- Score
- 6.0
- Created
- 27 Oct 2026, 11:50 PM
- Tags
- Audience
- developersvibe_codersai_agent_usersfounders
What happened
Jan van den Berg's 27 October 2026 post revisits Frederick Brooks's 1975 'Mythical Man-Month' law — "adding manpower to a late software project makes it later," drawn from the IBM OS/360 project — and asks whether it survives AI agents. His answer: the law mutated rather than died. Onboarding and stand-ups vanish, but orchestration overhead moves onto the human who must define "done", review code, catch hallucinations and stitch output together, and his proposed 2026 restatement is "Adding agents to a project with unclear requirements gets you the wrong answer faster." The piece is entirely argument and anecdote — no benchmarks, no case study — though the Hacker News thread drew 327 points and 204 comments.
Why it matters
The one actionable claim: parallelism only helps where the work is genuinely separable, so before splitting a task across multiple agents, write down the definition of done and who owns which files — otherwise, as the post puts it, agents "rewrite each other's work in a high-speed loop" and you get a wrong answer faster. Note this is a reasoned opinion with zero measurements attached, so treat it as a checklist prompt, not evidence that multi-agent setups fail.
Discussion angle
Ask everyone running more than one agent on a single codebase how they partition ownership — file-level, branch-level, or not at all — and whether they've actually seen agents overwrite each other's work, since the post asserts the loop but offers no example.