Memory Biases

Cryptomnesia

Mistaking a remembered idea for a new original thought.

What Is Cryptomnesia?

Cryptomnesia is a thinking trap where mistaking a remembered idea for a new original thought.

How It Tricks You

It can make a reconstructed memory feel like a clean recording.

Real-World Example

A designer thinks they invented a layout they actually saw months earlier.

Seen Online As

• I remember it clearly, so I trust that version.
• The memory feels vivid enough to count as proof.
• Later details are getting blended into what happened.

What To Ask Instead

Have I seen this idea before?

Related Thinking Traps

• Availability heuristic
• Availability cascade
• Recency bias
• Peak-end rule

Common Situations

• Thinking Traps with AI Prompts

Quick FAQ

What is Cryptomnesia?

Mistaking a remembered idea for a new original thought.

What is an example of Cryptomnesia?

A designer thinks they invented a layout they actually saw months earlier.

How do I spot Cryptomnesia?

Have I seen this idea before?