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
- Incident 01
A product lead proposes a 'fresh' onboarding concept that was actually suggested months earlier by a junior designer.
- Incident 02
An executive repeats a consultant's strategy language in a board meeting believing they coined it themselves.
- 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
- Misattribution of MemoryMisattribution happens when you remember information or an event but attach it to the wrong person, place,…
- Source ConfusionSource confusion is a memory error in which you correctly remember information but cannot accurately identify…
- False MemoryA false memory is a recollection of an event or detail that did not happen, or did not happen the way it is…
- SuggestibilitySuggestibility is the tendency for memory to be altered by leading questions, social cues, or post-event…
- Spacing EffectThe spacing effect is the finding that information is remembered better when study or exposure is spread out…
- Implicit StereotypeStereotypical bias is the tendency to remember, interpret, and judge people through broad category-based…
Source of record