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Philosophers have long noticed that the hardest arguments to escape are not the ones that attack your conclusions — they're the ones that accept your premises and then refuse to...
What's the strongest version of the argument against a position you're currently acting on — and have you actually made...
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Galen's great rival, the physician Asclepiades of Bithynia, built his entire medical practice on a simple but radical premise: the body is not a fixed state to be maintained but a...
What is the opposite of what you're currently doing about your most established health habit — and does that opposite...
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Sufi teachers in the classical tradition made a distinction that product managers almost never make: the difference between *'ilm al-yaqīn* — knowledge by description — and *'ayn...
Who in your last prioritization discussion had direct, first-hand experience of the problem being debated — and how...
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Medieval Islamic scholars had a concept they called 'ilm al-yaqin — knowledge by certainty — but they distinguished it sharply from what they called 'ilm al-'ayn: knowledge by...
When did you last notice that you were thinking about your work — narrating it, planning it, reviewing it — rather than...
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Feedback loops in complex systems have a frustrating property: the consequences of a decision arrive long after the decision itself, and by then the causal chain is nearly...
Pick a decision you made more than three months ago and still consider settled — what has happened since then that...
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Spiritual growth has a structural problem that almost no tradition admits openly: it can be mimicked perfectly by its opposite. The 13th-century Flemish mystic Mechtild of...
If you stripped away the parts of your spiritual practice that make you feel capable and composed, what would remain?
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Every mental model has a hidden variable its creator didn't know they were assuming. The 14th-century North African historian Ibn Khaldun built one of history's most sophisticated...
What would remain of your most-used mental model if you removed the one assumption it has never needed to defend?
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Ibn Khaldun, the 14th-century Arab historian, noticed something strange about expert knowledge: the more deeply a scholar mastered one civilization's assumptions, the less capable...
If you stripped away the model you use most automatically, what would you actually see in a situation you faced this...
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Medieval Islamic scholarship had a quality-control mechanism called *isnad* — every claim in a hadith had to be traced through a named chain of human transmitters, each one...
Pick the oldest 'we don't do that' in your current product and trace it back — whose decision was it, and does the...
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Political power, Thucydides observed, does not announce its logic — it enacts it. The strong do what they can; the weak suffer what they must. What he buried in that famous Melian...
Identify a political position you currently hold. Which of the three functions — justification, concealment of an...
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Every mental model is secretly a compression — a lossy one. The Scottish philosopher Thomas Reid's 18th-century opponents thought they had demolished his 'common sense realism' by...
In the last week, which mental model did you apply on autopilot — and what did it make invisible that you only noticed...
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Stoic philosopher Chrysippus — less famous than his successor Marcus Aurelius, but arguably more rigorous — argued that emotions are not feelings that happen to us but judgments...
What verdict were you quietly issuing the last time you felt your patience thin — and was it actually true?
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Discipline, in most modern discussions, gets treated as a supply problem — you either have enough of it or you don't. But the 19th-century philosopher Arthur Schopenhauer had a...
What is one structure you typically try to impose on yourself in the moment of temptation, that you could instead build...
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A medieval Persian optical scientist named Kamal al-Din al-Farisi spent years correcting Ibn al-Haytham's theory of rainbows — not by rejecting the framework, but by building a...
What is the last anomaly in your system or product that you closed without fully understanding — and what assumption...
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Thorstein Veblen noticed something in 1899 that most technology builders are still blind to: artifacts don't just solve problems — they perform status. The telephone wasn't...
Name a technology decision you made recently — to adopt, build, or drop something. What story did that choice tell...
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Pyrrhonian skeptics had a term for the relief that follows suspended judgment — ataraxia, a quietness of mind that comes not from resolving a question but from setting it down....
What would remain of your most pressing financial conviction if you gave yourself permission to not decide for 72 hours...
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Metacognition has a hidden cost that almost nobody accounts for: the moment you step back to observe your own thinking, you've already changed what you're observing. This isn't a...
What is the default frame you use when you catch yourself thinking poorly — and when did you last deliberately swap it...
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Abdallah ibn al-Mubarak, the eighth-century scholar and merchant who moved between battlefields and trading routes, made an observation that sounds like project management but is...
Think of the last time a child in your life showed you something they made or did — what was the first thing out of...
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Nagarjuna, the 2nd-century Buddhist philosopher, argued that nothing possesses *svabhāva* — its own independent, self-sufficient nature. Everything exists only through its...
When you last revised a scene involving your primary threat — did you locate that threat in a person, or in a set of...
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Pilots call it 'get-there-itis' — the subtle cognitive drift where the destination becomes so fixed in the mind that incoming evidence stops updating the decision. Weather...
Name the decision in your practice or flight planning that you've stopped actively reconsidering — the one where you'd...
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