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Cosine Similarity Said 0.92. The Payload Was Already Dead.

This story is from 2026-10-13. It is preserved in the archive; the latest stories are on the live feed.

An agent retrieves something from memory. Its next action looks different. Someone writes a blog post: the agent was poisoned by persistent memory. Maybe. But there is a large gap between "the action changed" and "the memory changed the action," and almost every demo I have seen falls into it. This…

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  1. 2026-10-13 13:45 · DEV Community — AI
    Cosine Similarity Said 0.92. The Payload Was Already Dead.

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