Filtered dossier

Hidden Numbers

Quantities that hide a rule you never agreed to.

  • 12 / 12
  • No visual on file
    Statistical Illusions Entry #0437

    The reason a study that replicates is worth two that do not

    A single study is a claim. A replication is a test of that claim. Two unreplicated studies are two untested claims, not twice the evidence.

    Adept
    The hidden part #0437

    Novelty fills journals. Replication fills knowledge. The incentive structure rewards the wrong one.

    Open file
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    Statistical Illusions Entry #0436

    Why a p-value is not a probability that you are right

    The p-value measures how surprising the data would be if the null hypothesis were true. It says nothing about the probability that the hypothesis itself is true.

    Novice
    The hidden part #0436

    A p-value tells you how surprising the data is. It does not tell you how true the hypothesis is.

    Open file
  • No visual on file
    Statistical Illusions Entry #0435

    The reason a graph without zero can double an effect

    Truncating the y-axis does not change the data. It changes the slope the eye sees, and the eye reads slope as magnitude before the mind reads the numbers.

    Master
    The hidden part #0435

    A graph with correct data and a truncated axis is not lying about the numbers. It is lying about the shape.

    Open file
  • No visual on file
    Statistical Illusions Entry #0434

    Why a percentage change needs its starting point

    A fifty per cent increase from two is one. A fifty per cent increase from two million is one million. The percentage is identical; the meaning is not.

    Adept
    The hidden part #0434

    A percentage without a base is not a statistic. It is a frame looking for a denominator the reader will supply.

    Open file
  • No visual on file
    Scarcity & Queues Entry #0462

    The reason an invitation raises acceptance more than an offer

    An offer says the item is available. An invitation says the recipient was selected. The difference is not in the item but in the identity it assigns.

    Adept
    The hidden part #0462

    An offer presents a product. An invitation presents an identity. People accept identities faster than products.

    Open file
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    Scarcity & Queues Entry #0458

    The reason an expiring discount beats a larger permanent one

    A permanent reduction can be acted on at any time, which means it can be postponed indefinitely. A deadline converts an intention into a dated task.

    Adept
    The hidden part #0458

    An open offer can be postponed forever. The deadline is not pressure; it is the thing that gives the intention a date.

    Open file
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    Scarcity & Queues Entry #0461

    Why a paywall creates a different reader

    The paywall does not merely filter who reads. It changes how the remaining readers read, because the cost they paid becomes part of the experience.

    Novice
    The hidden part #0461

    The paywall does not select better readers. It makes the same readers better at reading.

    Open file
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    Scarcity & Queues Entry #0457

    Why a members-only door raises the perceived quality inside

    A restriction implies that something is being protected. The inference is made before anything inside has been seen, and it survives finding nothing there.

    Novice
    The hidden part #0457

    Restriction and value are separable. The door can be installed first, and the perceived quality assembles itself behind it.

    Open file
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    Scarcity & Queues Entry #0460

    The reason rationing changes what people want

    A product that was adequate becomes desirable when restricted. The restriction changed the inference the buyer draws, not the product itself.

    Master
    The hidden part #0460

    A quota does not just limit access. It changes the inference about what is being accessed. The product behind the restriction is perceived as the product that deserved the restriction.

    Open file
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    Scarcity & Queues Entry #0452

    The reason a waiting list makes the product better received

    The wait is not a cost subtracted from the experience. It is an investment that the buyer then needs to justify, and the justification raises the evaluation.

    Adept
    The hidden part #0452

    Delay builds evaluative investment. The wait does not test patience; it manufactures the satisfaction that follows.

    Open file
  • No visual on file
    Statistical Illusions Entry #0433

    The reason a small sample produces the biggest effects

    Rank any set of groups by outcome and the smallest ones fill both extremes. Low counts produce wide swings, and the swing is mistaken for the finding.

    Adept
    The hidden part #0433

    Small samples swing hardest in both directions. Publishing only one tail turns the swing into a recommendation.

    Open file
  • No visual on file
    Scarcity & Queues Entry #0459

    Why last few remaining is a stock statement, not a stock level

    The label says the shelf is nearly empty. The shelf is always nearly empty. The scarcity is in the sentence, not in the warehouse.

    Adept
    The hidden part #0459

    The number on the page is not a reading from a sensor. It is a sentence written to produce urgency, and the sentence does not change when the warehouse does.

    Open file