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A comment on Why It Took So Long to Invent the Wheel (2012). Parent comment

Re:Why It Took So Long to Invent the Wheel (2012) by ekianjo on Saturday October 29, 2016 @10:35AM (#12824111)
Greeks had no telescope yet some of them had already devised that the Earth was orbiting around the Sun and also calculated the diameter of the Earth with reasonable accuracy.
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