Agnostics From The United States

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April 10, 2026

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April 10, 2026

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"A largely parallel example involving human behavior has been used elsewhere by Savage and me. Consider the problem of predicting the shots made by an expert billiard player. It seems not at all unreasonable that excellent predictions would be yielded by the hypothesis that the billiard player made his shots as if he knew the complicated mathematical formulas that would give the optimum directions of travel, could estimate accurately by eye the angles, etc., describing the location of the balls, could make lightning calculations from the formulas, and could then make the balls travel in the direction indicated by the formulas. Our confidence in this hypothesis is not based on the belief that billiard players, even expert ones, can or do go through the process described; it derives rather from the belief that, unless in some way or other they were capable of reaching essentially the same result, they would not in fact be expert billiard players. It is only a short step from these examples to the economic hypothesis that under a wide range of circumstances individual firms behave as if they were seeking rationally to maximize their expected returns (generally if misleadingly called "profits") and had full knowledge of the data needed to succeed in this attempt; as if, that is, they knew the relevant cost and demand functions, calculated marginal cost and marginal revenue from all actions open to them, and pushed each line of action to the point at which the relevant marginal cost and marginal revenue were equal. Now, of course, businessmen do not actually and literally solve the system of simultaneous equations in terms of which the mathematical economist finds it convenient to express this hypothesis, any more than leaves or billiard players explicitly go through complicated mathematical calculations or falling bodies decide to create a vacuum. The billiard player, if asked how he decides where to hit the ball, may say that he "just figures it out" but then also rubs a rabbit's foot just to make sure; and the businessman may well say that he prices at average cost, with of course some minor deviations when the market makes it necessary. The one statement is about as helpful as the other, and neither is a relevant test of the associated hypothesis."

- Milton Friedman

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"Making models was reputed to be hugely enjoyable... But when you got the kit home and opened the box the contents turned out to be of a uniform leaden gray or olive green, consisting of perhaps sixty thousand tiny parts, some no larger than a proton, all attached in some organic, inseparable way to plastic stalks like swizzle sticks. The tubes of glue by contrast were the size of large pastry tubes. No matter how gently you depressed them they would blurp out a pint or so of a clear viscous goo whose one instinct was to attach itself to some foreign object—a human finger, the living-room drapes, the fur of a passing animal—and become an infinitely long string. Any attempt to break the string resulted in the creation of more strings. Within moments you would be attached to hundreds of sagging strands, all connected to something that had nothing to do with model airplanes or World War II. The only thing the glue wouldn’t stick to, interestingly, was a piece of plastic model; then it just became a slippery lubricant that allowed any two pieces of model to glide endlessly over each other, never drying. The upshot was that after about forty minutes of intensive but troubled endeavor you and your immediate surroundings were covered in a glistening spiderweb of glue at the heart of which was a gray fuselage with one wing on upside down and a pilot accidentally but irremediably attached by his flying cap to the cockpit ceiling. Happily by this point you were so high on the glue that you didn’t give a shit about the pilot, the model, or anything else."

- Bill Bryson

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"I knew more things in the first ten years of my life than I believe I have known at any time since. I knew everything there was to know about our house for a start. I knew what was written on the undersides of tables and what the view was like from the tops of bookcases and wardrobes. I knew what was to be found at the back of every closet, which beds had the most dust balls beneath them, which ceilings the most interesting stains, where exactly the patterns in wallpaper repeated. I knew how to cross every room in the house without touching the floor, where my father kept his spare change and how much you could safely take without his noticing (one-seventh of the quarters, one-fifth of the nickels and dimes, as many of the pennies as you could carry). I knew how to relax in an armchair in more than one hundred positions and on the floor in approximately seventy- five more. I knew what the world looked like when viewed through a Jell-O lens. I knew how things tasted—damp washcloths, pencil ferrules, coins and buttons, almost anything made of plastic that was smaller than, say, a clock radio, mucus of every variety of course—in a way that I have more or less forgotten now. I knew and could take you at once to any illustration of naked women anywhere in our house, from a Rubens painting of fleshy chubbos in Masterpieces of World Painting to a cartoon by Peter Arno in the latest issue of The New Yorker to my father’s small private library of girlie magazines in a secret place known only to him, me, and 111 of my closest friends in his bedroom."

- Bill Bryson

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