Filtered dossier

Novice

Clearance level 1.

  • 12 / 12
  • No visual on file
    Market Signals Entry #0403

    Why a guarantee is a statement about failure rates

    A company that offers a long warranty is not being generous. It is telling you, in financial language, how rarely it expects to pay.

    Novice
    The hidden part #0403

    Confidence is expressed in liability. The warranty says less about what will happen to the buyer and more about what the company already knows will not.

    Open file
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    Incentive Design Entry #0378

    Why a fine can act as a price

    Before the fine existed, guilt kept the behaviour in check. After the fine was introduced, the behaviour increased — because paying made it permissible.

    Novice
    The hidden part #0378

    Priced misbehaviour becomes permitted misbehaviour. The fine did not add a cost; it removed a prohibition.

    Open file
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    Price Psychology Entry #0361

    Why a price ending in zero suits luxury

    A round number implies the price was set by authority. A precise number implies it was set by calculation. The first suits a product that is above calculation.

    Novice
    The hidden part #0361

    A round price says the seller did not haggle. A precise price says the seller calculated. Luxury cannot afford to look like it calculated.

    Open file
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    Price Psychology Entry #0357

    Why anchoring works on the price you never pay

    A struck-through figure that nobody was charged still sets the standard the real price is judged against. Its only function is to be higher.

    Novice
    The hidden part #0357

    The anchor works by being adjacent, not by being true. A number nobody paid still sets the scale for the number you do.

    Open file
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    Narrative Structure Entry #0532

    Why data needs a protagonist to travel

    Aggregate evidence persuades less than a single named case, and adding the aggregate to the case can reduce the response rather than strengthen it.

    Novice
    The hidden part #0532

    A number describes a population. A person creates an obligation, and only the second one moves people.

    Open file
  • Why every price ends in 99
    Hidden Numbers Entry #0005

    Why every price ends in 99

    $9.99 is not one cent cheaper than $10. It is one whole digit cheaper — and the digit is the part you actually read.

    Novice
    The hidden part #0005

    You read prices left to right and stop early. The 99 arrives after you have already decided.

    Open file
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    Platform Mechanics Entry #0286

    Why moderation is a pricing problem, not a values problem

    At scale, every piece of content must be reviewed at a cost that approaches zero. The cost determines what gets caught, and the values follow the budget.

    Novice
    The hidden part #0286

    Values are free to declare. Moderation costs money per decision. At scale, the budget determines what the values actually mean.

    Open file
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    Platform Mechanics Entry #0282

    Why recommendation systems narrow taste while widening catalogue

    The library grows every month and the same titles keep arriving at the top. Availability and discoverability are separate quantities that can move apart.

    Novice
    The hidden part #0282

    Catalogue size and reachable set are different numbers. Recommendation confidence is built from attention already spent.

    Open file
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    Habit Loops Entry #0303

    Why changing a route changes a routine

    A habit feels like a decision stored in the person, but it is actually stored in the environment. Move the person and the habit loses its cue.

    Novice
    The hidden part #0303

    Habits are stored with their surroundings. Change the surroundings and the habit has to be rebuilt from scratch — or it simply does not fire.

    Open file
  • Why salary comes from salt
    Hidden Words Entry #0003

    Why salary comes from salt

    Your salary is named after a Roman salt allowance. So is being "worth your salt", and so, by a longer road, is the word soldier's pay.

    Novice
    The hidden part #0003

    The word for your monthly pay is a fossil of a commodity you now buy for pennies.

    Open file
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    Platform Mechanics Entry #0278

    Why free platforms have the most expensive economics

    When the product costs nothing, the cost has not disappeared. It has moved to a currency the user does not track: attention, data and the shape of the feed.

    Novice
    The hidden part #0278

    The product is the audience. A platform that charges nothing has merely moved the price to a currency its users do not audit.

    Open file
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    Statistical Illusions Entry #0428

    Why a ninety-nine per cent accurate test is usually wrong

    A test that is right ninety-nine times in a hundred can still be wrong about most of the cases it flags, and simple arithmetic shows why.

    Novice
    The hidden part #0428

    Accuracy is a property of the test. Whether an alert is right also depends on how rare the thing is.

    Open file