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Case file

Cryptomnesia

Filed under
What Should We Remember

The charge

Cryptomnesia is when a forgotten memory returns but feels like a new original idea. The person is not deliberately plagiarizing; they misread familiarity as creativity.


How it operates

An old idea can remain in memory after its source has faded. When it resurfaces fluently, the mind may mistake ease of retrieval for originality because the prior exposure is no longer consciously accessible.

Logged incidents

  1. Incident 01

    A product lead proposes a 'fresh' onboarding concept that was actually suggested months earlier by a junior designer.

  2. Incident 02

    An executive repeats a consultant's strategy language in a board meeting believing they coined it themselves.

  3. Incident 03

    A startup founder names a feature using phrasing from a competitor demo they saw months before.

What to watch for

Notice when an idea feels instantly complete or oddly familiar. Ask: "Have I seen or heard something very similar before, even casually?"

Recommended action

Keep idea logs with dates and sources, and run novelty checks before presenting concepts as original. In group settings, explicitly ask, "Where might this have come from?" to surface prior exposure.

Known associates

Source of record

en.wikipedia.org

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