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What You Notice You See Everywhere
Systems / Principles · Added Apr 2026
Once a pattern enters your awareness, it appears to be everywhere.
The Idea
Known as the Baader-Meinhof phenomenon (or frequency illusion): you learn a new word, concept, or pattern, and suddenly it shows up everywhere you look. The world didn't change — your attention did. Your brain was filtering it out before; now it flags every instance.
Two mechanisms drive it. Selective attention makes the new pattern stand out. Confirmation bias then makes each new sighting feel like proof of how common it is.
Why It Matters
- In systems work, you spot a bug, an anti-pattern, or a failure mode — and then see it in unrelated places, some real and some imagined.
- Learning a new mental model (e.g. feedback loops, Conway's Law) makes everything look like that model for a while.
- It distorts root-cause analysis: the explanation you reached for last time becomes the lens you use for the next incident.
- It can also be useful — newly tuned attention surfaces signals you'd been missing.
How to Apply
- Treat sudden ubiquity as a flag, not evidence. If a pattern seems to be everywhere, ask whether you're noticing it more or whether it's actually more frequent.
- Count, don't recall. Memory of "I see this all the time" is unreliable. Sampled data isn't.
- Time-box new lenses. When you adopt a new framework, notice what you start ignoring, not just what you start seeing.
- Cross-check with someone who hasn't learned the lens. They'll tell you when you're over-applying it.
The Trap
Mistaking the illusion for a real trend and reorganising the system around it. You've just learned about a class of bug, you see three of them in a week, and you launch a quarter-long programme to fix it — when in fact the rate hasn't changed and the cost wasn't worth the work. The pattern was always there; only your attention shifted.
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