The Frequency Illusion: You Just Noticed It, but it Was Always There
Shownotes
Your brain doesn't show you everything around you — it shows you what it's been told to look for. In this episode of the Cognition Catalog, we break down the frequency illusion and how this quirk of attention can quietly warp how product teams spot trends, prioritize problems, and build roadmaps.
What if the trend your team keeps talking about isn't actually a trend — and your brain has been quietly manufacturing evidence for it this whole time?
The frequency illusion is one of those cognitive biases that feels like insight right up until it isn't. You learn a new term, you spot a new pattern, and suddenly it seems like it's everywhere: in your product, in your competitors' apps, in research you've been staring at for weeks. The information was always there. Your attention just finally got the memo.
In this episode of the Cognition Catalog, I break down how the frequency illusion works, where it came from (including the surprisingly colorful backstory behind the Baader-Meinhof phenomenon), and why it doesn't stop at UI patterns. The same mechanism that makes you see skeleton loaders everywhere after one design review is the same one that inflates a single customer complaint into what feels like a five-alarm fire on your roadmap.
The tricky part? It feels exactly like professional growth. And when an entire team gets primed on the same idea at the same time, that individual bias can scale into something much harder to catch. If you want to get better at separating what you're noticing from what's actually happening, this episode is for you.
Topics:
• 03:00 - The Inter story: how a LinkedIn post changed everything I saw.
• 04:00 - What the frequency illusion actually is.
• 04:30 - The Baader-Meinhof phenomenon and how it got its name.
• 05:00 - Arnold Zwicky coins "the frequency illusion" in 2005.
• 05:30 - Selective attention and confirmation bias: the two engines behind it.
• 06:30 - The recency illusion and how it compounds the problem.
• 07:00 - How the frequency illusion shows up in design critiques.• 08:30 - What to actually do about it: attention is not neutral.
• 08:50 - Watch for shared attention bias on your team.
• 09:20 - Don't let air time substitute for evidence.
• 09:45 - Create deliberate distance between discovery and decision.
• 10:15 - Surface what you're not seeing.
• 11:00 - Closing thoughts and listener question.
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