The Magical Number Seven, Plus or Minus Two, image 1 of 11 / 1
Item

The Magical Number Seven, Plus or Minus Two

in Papers I Keep Rereading by Diego Navarro

The Magical Number Seven, Plus or Minus Two on “Papers I Keep Rereading”, a list by Diego Navarro on TheLysts.

Details

Photo
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Name
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Field
Cognitive psychology
Year
1956
Main topic
Limits of human short-term memory
Key idea
People can hold about 7 (give or take) discrete chunks in working memory at once.
Why it matters
Explains why overloaded menus, giant forms, and 20-option settings pages feel like getting full-court pressed.
Best for
Pruning UI complexity, onboarding flows, and settings architecture.
Difficulty
Medium — old-school academic prose but short.
My take
Read this and you’ll start seeing “magic seven” landmines all over your product — and in your slide decks.
Reading tip
Skim the intro, then focus on the sections with examples of chunking; you can mostly ignore the mathy bits.