What is thought capture?

Thought capture is a concept in personal epistemology: Your most novel thinking arrives as fleeting signals. Without a capture practice, you are systematically destroying your own cognitive raw material.

Example: You're walking to a meeting and a connection fires between two problems your team has been stuck on separately. By the time you sit down, you remember you had an insight — but not what it was. The connection is gone. It's not coming back. Your default mode network generated something genuinely novel, and you let it evaporate because there was no capture tool within reach.

This concept is part of Phase 1 (Perception and Externalization) in the How to Think curriculum, which builds the epistemic infrastructure for perception and externalization.