A wrong answer inside one conversation dies with the conversation. A wrong answer written to memory becomes a retrievable fact that conditions every later run, and the agent then derives new conclusions from it. Deleting it is the part nobody designed for.
Updated Aug 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.
A wrong answer inside one conversation dies with the conversation. A wrong answer written to memory becomes a retrievable fact that conditions every later run, and the agent then derives new conclusions from it. Deleting it is the part nobody designed for.
The distinction that decides this round is between memory that stores observations and memory that stores conclusions. Only the second poisons, because only the second lets the agent's own output become an input. The second thing to listen for is whether the candidate can perform the retraction: knowing which entry is wrong is useless if you cannot find everything downstream of it, and that requires derivation edges recorded before the incident, not reconstructed during it.
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