Your agent said "Done" — Glen Bradley operationalizes world-model dissonance as an agent control plane
GlenBradley · x · 2026-09-22
In his first Substack article, Glen Bradley argues the dominant agent failure mode isn't doing the wrong thing but collapsing "controller accepted the command" into "Done." His example: an agent flips a corporate WLAN from VLAN 70 to VLAN 40, the controller returns success — yet auth may still fail, DHCP may be broken, and VLAN 70 may never have been the root cause. These are different facts that today's agents compress into one word.
Key points:
- The useful causal chain is proposal → accepted → world changed → condition satisfied, and any link can break.
- He rejects simulated pain as a control plane, instead operationalizing dissonance/consonance: maintain two world models (best-estimated reality vs. desired world); the delta creates dissonance that can drive autonomous task allocation in long-horizon agents.
A methodology piece highlighting the overlooked gap between claimed success and actual world change in agent evals.
Related event: Agent Says Done, But Is It Fixed? Splitting State From Outcome(6 posts)→
More from coding & agent
- Cloudflare Talk: Swapping Some Agent LLM Calls for Fast Models Like Jev Gives Big Speedups — michellechen · 2026-11-12
- Engineer Curates 15 AI Agent Design Patterns Across Single-Agent, Multi-Agent and Feedback Tiers — MaryamMiradi · 2026-11-12
- Google Antigravity rolls out browser use, closing the loop from research to coding to live verification — rseroter · 2026-11-12
- Prettier 3.10 ships new Flow/JS syntax and a Zig-powered Yuku plugin — Vjeux · 2026-11-12
- YC-backed Graphide claims CI runner 10-20x faster than GitHub on 24 repos — ycombinator · 2026-11-12
- Lessons from a 1600-page transcription: general thinking resists staying organized — fkasummer · 2026-11-12