{ "schema": "hangingcontext.desk/1", "type": "edition", "id": "2026-10-28T12", "title": "2026-10-28 12:00 UTC", "generated_at": "2026-10-28T12:32:52Z", "story_count": 25, "stories": [ { "slug": "harness-geometry-agent-design", "url": "https://hangingcontext.com/stories/2026-10-28/harness-geometry-agent-design/", "json": "https://hangingcontext.com/stories/2026-10-28/harness-geometry-agent-design/index.json", "markdown": "https://hangingcontext.com/stories/2026-10-28/harness-geometry-agent-design/index.md", "headline": "The Harness Is the Product: Why Agent Design Starts Outside the Model", "dek": "In preprints published October 27 and 28, researchers show that changing an agent harness changes both its ceiling and its mismatch, that independent critic review is the cheapest accuracy win, and that harness-plus-model learning beats either alone.", "newsroom": "artificial-intelligence", "beat": "developers", "edition": "2026-10-28T12", "published_at": "2026-10-28T12:32:52Z", "trust": 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