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Hollerith

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  • Time vs space at the Big Bang?

    I have read several times that "time did not exist before the Big Bang." I have also read that "time is one of the four dimensions. Does this therefore mean that

    [1] Dimensions did not exist before the Big Bang?

    [2] Space or "distance" did not exist before the BB? (This would require all matter to exist within a radius of zero...)

    6 AnswersAstronomy & Space7 years ago

  • Any explanation for the Evolution of myopia?

    Myopia (nearsightedness) is quite widespread among modern humans. What evolutionary phenomenon would be the reason for this? Is there some benefit?

    5 AnswersAnthropology8 years ago