You add memory to your agent with Mem0, ship it, and it works great in your dev environment where you're the only user. Then you go multi-tenant — real users, real sessions — and three weeks later someone reports that the agent "remembers" something they never told it. It's not a hallucination.
Source: [Dev.to](https://dev.to/mukesh_13/give-your-mem0-agent-session-scoped-memory-in-15-minutes-one-filter-youre-probably-skipping-5139)