What is capture context notes?

Capture context notes is a concept in personal epistemology: Record why an idea matters and what triggered it not just the idea itself.

Example: You read an article about decision fatigue and highlight: 'Judges granted parole at a 65% rate after meals and near 0% before.' Powerful stat. You drop it into your notes. Four months later you find it while writing something about team management. You stare at the highlight. Was it about judicial bias? Nutrition and cognition? Decision timing? Willpower depletion? You highlighted it because your team had just shipped a critical decision at 5pm on a Friday and you suspected fatigue drove the outcome — but the note says none of that. The content survived. The context — the reason you captured it, the connection you saw, the problem you were solving — evaporated the moment you closed the article. Now imagine the same capture with three extra lines: 'Source: Danziger et al. 2011 via Kahneman Thinking Fast and Slow ch. 3. Spark: Our Friday 5pm launch decision — were we the hungry judges? Connection: L-0030 context belongs with the atom, also relates to batch processing timing.' Thirty seconds of context. The difference between a dead highlight and a living building block.

This concept is part of Phase 3 (Capture Systems) in the How to Think curriculum, which builds the epistemic infrastructure for capture systems.