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Apples didn't stop falling when General Relativity supplanted Newtonian mechanics. The purpose of a theory is to add up to observed reality, rather than something else. Quantum mechanics is not some strange alternative universe, told as a story to delight us with its counterintuitiveness; quantum mechanics is where we have always lived. Science sets out to answer the question "What adds up to normality?" and the answer turns out to be "Quantum mechanics adds up to normality."

There are multiple interpretations of this quote. In the field of statistics, the majority of binomial problems in nature distribute normally. Adding up all of the point probabilities under the curve gives you a probability of 1. As Quarantine deals with lots of different probability problems (dice, coins, batteries, silver ions), it's tempting to consider that Egan is being literal here. Most things distribute normally... the space under the curve (literally) *adds up* to normality.

A weaker extension of this principle applies to ethical and metaethical debates, which generally ought to end up explaining why you shouldn't eat babies, rather than why you should....

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