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When we roll dice to ''determine'' an outcome we do not build a statistical model that predicts a ⅙ probability: we build the dice to yield that outcome. A die is part of what [[Nancy Cartwright]] would call a “[[nomological machine]]”:<ref>This is a ''terrible'', typically ''academic'' label. No doubt it is etymologically accurate, but it is forbidding to a lay reader. Academics, like lawyers, tend to do this while they train and occupy the junior rungs as a self-credentialising device. By the time they sit on the higher rungs, they don’t know any different way of writing.Cartwright is a brilliant thinker, but her writing is dense and hyper-academic. </ref> a carefully designed, constrained, hermetically-sealed [[simple system]], designed to generate a specific theoretical outcome. If over time our dice don’t yield the ⅙ outcome we want, we don’t conclude the ⅙ outcome is wrong: ''we throw out the'' ''dice''. | When we roll dice to ''determine'' an outcome we do not build a statistical model that predicts a ⅙ probability: we build the dice to yield that outcome. A die is part of what [[Nancy Cartwright]] would call a “[[nomological machine]]”:<ref>This is a ''terrible'', typically ''academic'' label. No doubt it is etymologically accurate, but it is forbidding to a lay reader. Academics, like lawyers, tend to do this while they train and occupy the junior rungs as a self-credentialising device. By the time they sit on the higher rungs, they don’t know any different way of writing.Cartwright is a brilliant thinker, but her writing is dense and hyper-academic. </ref> a carefully designed, constrained, hermetically-sealed [[simple system]], designed to generate a specific theoretical outcome. If over time our dice don’t yield the ⅙ outcome we want, we don’t conclude the ⅙ outcome is wrong: ''we throw out the'' ''dice''. | ||
The [[The map and the territory|“map” and “territory”]] are, thus, transposed: it turns out that the “real-world” dice are the map, the theoretical probability is the territory. The map is, as far as engineering permits, ''identical'' to the territory. It need not | The [[The map and the territory|“map” and “territory”]] are, thus, transposed: it turns out that the “real-world” dice are the map, the theoretical probability is the territory. The map is, as far as engineering permits, ''identical'' to the territory. It need not take the form of qdice: it could be any contraption that reliably yields a ⅙ probability. Now each of us has a [[difference engine]] in our pocket, we could generate the same outcome with a random number-generator. | ||
Machined dice and the flat, constrained surface on which they fall are not meant to represent “the real world”. They aspire to an idealised platonic utopia, free of friction and caprice, where abstract objects behave yield obediently to the expected statistical outcome: ⅙. | |||
Likewise, if, inside your [[nomological machine]] there is a mischievous imp who catches and places the die as it sees fit, the conditions for your | A “loaded” die is a ''flawed'' [[nomological machine]]. So is a surface like sand which allows a die an ambiguous resting place upon its edge. If, over time you get don't get the ⅙ outcome you expect you don't chuck out the probability theory: you chuck out the dice. | ||
Likewise, if, inside your [[nomological machine]] there is a mischievous imp who catches and places the die as it sees fit, the conditions for your probabilis1tic calculation do not prevail. There must be no interfering causal agency. | |||
“[[Nomological machine|Nomological machines]]” are highly constrained, artificial environments. If all their conditions are not satisfied, we can expect the world to behave differently without validating the machine. This is how, as [[Nancy Cartwright]] put it “the laws of physics lie”. | “[[Nomological machine|Nomological machines]]” are highly constrained, artificial environments. If all their conditions are not satisfied, we can expect the world to behave differently without validating the machine. This is how, as [[Nancy Cartwright]] put it “the laws of physics lie”. | ||