Depth Over Breadth

principle

Durable understanding comes from limiting routine updates and investing sustained attention in a few important subjects. Breadth tells you what happened; depth helps you build a model of why.

The proposed news diet is startlingly small: spend about five minutes getting informed, then stop. The rest of your attention belongs to subjects that will still matter long after today’s updates have expired.

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Trade coverage for a causal map

Following many small developments repeatedly resets your attention: each item supplies another fact but little time to connect it to causes, assumptions, or consequences. Staying with one important topic for a long time lets those fragments accumulate into structure—closer to Information Is Not Understanding than mere recall. The scarce resource is not access to information but sustained attention, so every increase in coverage reduces the depth available per subject: the Breadth-Depth Tradeoff.

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Where it shows up

A five-minute news boundary

Use a brief update to maintain basic awareness, then reserve serious attention for a small number of enduring interests. The point is not ignorance; it is refusing to let minor developments consume the time needed for understanding.

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Depth still needs a horizon scan

Going deep is not a reason to become oblivious. The recommendation retains a short period for staying informed; breadth has value as a detection layer, while depth is reserved for topics important enough to justify prolonged study.

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Put one subject on a long clock

Tomorrow, cap general news at five minutes. Choose one topic you expect to care about for years and spend the reclaimed time tracing one causal question about it—following evidence until you can explain not just what happened, but why.

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Episodes that teach this