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Book: Cycles of Time: An Extraordinary New View of the Universe
Quotes of Book: Cycles of Time: An
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  1. Roger Penrose _ Cycles of Time: An

    To make this condition mathematically clearer, it is convenient to assert it in the form that the space-time can be continued smoothly, as a conformal manifold, a little way prior to the hypersurface . To before the Big Bang? Surely not: the Big Bang is supposed to represent the beginning of all things, so there can be no 'before'. Never fear-this is just a mathematical trick. The extension is not supposed to have any physical meaning! Or might it …?
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