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A daily nudge from the
world's wisest minds

For people who

read a lot but remember little.
Today's Nudge

Charlie Munger borrowed heavily from physics when he insisted on thinking in 'inversions' — instead of asking how to succeed, ask what would guarantee failure, then avoid it. Applied to product decisions: don't ask what features users want. Ask what would make them definitely stop using your product, then make sure none of those are true. Most strategic errors aren't failures of vision; they're failures to clearly see the obvious ways you're losing.

What would make your best customers quietly stop using your product or working with you — and are any of those things quietly happening right now?

Decision TheoryCharlie Munger

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Product Management
Mental Models
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Inversion — Charlie Munger's favorite mental model — transforms how you build product roadmaps. Instead of asking 'what should we build next?', ask 'what would guarantee this product fails?' The features you'd never ship become guard rails. The assumptions you'd never test become your biggest risks. The best PMs don't just prioritize what to do — they systematically eliminate what not to do.

What's one assumption in your current roadmap that you've never tried to disprove?

Decision Theory × Product Strategy

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From the archive

Real nudges, for people who take their thinking seriously

Trusted by founders, operators, and thinkers who've outgrown generic content.

Philosophy of Science (Kuhnian paradigm theory)Thomas Kuhn

In 1962, Thomas Kuhn noticed something that should have been obvious but wasn't: scientists don't abandon a flawed theory when evidence contradicts it. They add patches,...

What's one mental model you're currently defending with exceptions — and what would you have to admit if you discarded...

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German sociology / Philosophy of cultureGeorg Simmel

Gabriel Tarde's near-contemporary, the sociologist Georg Simmel, noticed something peculiar about fashion in 1904: it moves in two directions simultaneously — upward imitation and...

Name one specific customer segment or user type that was loud about your product 18 months ago and is now silent. What...

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Islamic social philosophy / historical sociologyIbn Khaldun (Muqaddimah, Book I)

Every culture that has thought carefully about fatherhood eventually arrives at the same uncomfortable question: what are you actually transmitting? Ibn Khaldun — the 14th-century...

If your child could only describe you by what they've *seen you do* this week — no words, no intentions — what...

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Renaissance naturalist medicine synthesized with social psychologyParacelsus (Theophrastus von Hohenheim), synthesized with Kenneth Gergen's concept of social saturation

Paracelsus, the 16th-century Swiss physician-alchemist, made an observation that cut against every medical orthodoxy of his era: 'The dose makes the poison.' He meant it literally...

Which habit in your health routine are you defending with evidence about why it's good — rather than noticing whether...

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Drawing from traditions across the world

StoicismProductivityPsychologyLeadershipHabit ScienceZen BuddhismDecision TheoryManagementIndian PhilosophyAfrican Philosophy

“The unexamined life is not worth living.”

— Socrates

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