# Unlearn

- **Event:** [Agents in Context Toronto: a MongoDB Hackathon](https://cerebralvalley.ai/e/mongodb-toronto-hackathon)
- **When:** Sat, Nov 14 at 9:00 AM – 9:00 PM (EST)
- **Where:** Toronto, Canada
- **Team:** [David Awodumila](https://cerebralvalley.ai/u/its_tomi), [Greatness Ransome-kuti](https://cerebralvalley.ai/u/Micgr8t), [Aniket Shinde](https://cerebralvalley.ai/u/aniketqxp), [Jasmine Hou](https://cerebralvalley.ai/u/pljj)
- **GitHub:** https://github.com/aniketqxp/mongodb-hackathon
- **Demo video:** https://www.loom.com/share/7483d20815344005b0895bd894096506
- **Gallery:** https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/94

Every recommender has the same blind spot: tell it to forget something, and it quietly learns it right back. We built the fix, a governed memory layer on MongoDB Atlas that makes forgetting actually stick, by retracting the evidence behind a memory instead of just its label, and repairing only the decisions that depended on it. The results speak for themselves: naive forgetting brings the forgotten content back at rank 1 in every session, ours keeps it gone in all three, and the same core powers a completely different domain without changing a single line of code.

## More from Agents in Context Toronto: a MongoDB Hackathon

- [Gomon](https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/91)
- [Team AI](https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/92)
- [GadgetForge](https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/93)
- [Standing Order](https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/95)
- [Travelwanders](https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/96)
- [Stephen/Soham](https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/97)

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Markdown version of https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/94. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt