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The Greek tradition was a complete contrast to that of the Far East.... the Greeks placed logic at the pinnacle of human thinking. Their sceptical attitude towards the wielding of 'non-being' as some sort of 'something' that could be subject to logical development was exemplified by Parmenides' influential arguments against the concept of empty space.... He maintained that you can only speak about what is: what is not cannot be thought of, and what cannot be thought of cannot be.... more unexpected was the further conclusion that time, motion nor change could exist either.
John D. Barrow
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We say that the string is 'random' if there is no other representation of the string which is shorter than itself. But we will say that it is 'non-random' if there does exist such an abbreviated representation.... In general, the shorter the possible representation... the less random... On this view we recognize science to be the search for algorithmic compressions.
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Just focusing on what exists now seems a bit exclusive. And if we include everything that has ever existed as part of the universe, why not include the future as well? This seems to leave us with the definition that the universe is everything that has ever existed, does exist, or will ever exist.
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Where there is life there is a pattern, and where there is a pattern there is mathematics. Once that germ of rationality and order exists to turn a chaos into a cosmos, then so does mathematics. There could not be a non-mathematical Universe containing living observers.
John D. Barrow
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Aristotle believed that the world did not come into being at some time in the past; it had always existed and it would always exist, unchanged in essence for ever. He placed a high premium on symmetry and believed that the sphere was the most perfect of all shapes. Hence the universe must be spherical.... An important feature of the spherical shape... was the fact that when a sphere rotates it does not cut into empty space where there is no matter and it leaves no empty space behind.... A vacuum was impossible. It could no more exist than an infinite physical quantity.... Circular motion was the most perfect and natural movement of all.
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Apparently, a great deal of dark, unseen material exists, whose gravitational pull is responsible for the motions of the stars and galaxies that we see.
John D. Barrow
Quote of the day
Good authors, too, who once knew better words Now only use four-letter words Writing prose — Anything goes.
Cole Porter
John D. Barrow
Born:
November 29, 1952
Died:
September 26, 2020
(aged 67)
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