Bertrand Russell on Geocentricity

953432_13476061“Before Copernicus, people thought that the earth stood still and that the heavens revolved about it once a day. Copernicus taught that “really” the earth revolves once a day, and the daily rotation of sun and stars is only “apparent”… But in the modern theory the question between Copernicus and his predecessors is merely one of convenience; all motion is relative, and there is no difference between the two… Astronomy is easier if we take the sun as fixed than if we take the earth… But to say more for Copernicus is to assume absolute motion, which is a fiction. It is a mere convention to take one body as at rest. All such conventions are equally legitimate, though not all are equally convenient.”

~Russell “The ABC of Relativity [London: Allen & Unwin, 1958, p.13]

Source:  Comment 144, ChristianTrader/Hermonta Godwin

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