"The laws of Nature are based upon the existence of a pattern, linking one state of affairs to another; and where there is pattern, there is symmetry. Yet...the symmetries that the laws enshrine are broken in... outcomes. Suppose that we balance a needle on its point and then release it. The law of gravity, which governs its subsequent motion, is perfectly democratic. It has no preference for any particular direction in the Universe: it is symmetrical in this respect. Yet, when the needle falls, it must fall in a particular direction. The directional symmetry of the underlying law is broken, therefore... By the same token, the fallen needle hides the symmetry of the law... Such 'symmetry-breaking' governs much of what we see in the Universe... It allows a Universe governed by a small number of symmetrical laws to manifest an infinite diversity of complex, asymmetrical states. This is how the Universe can be at once, simple and complicated."
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University of Cambridge facultyMathematicians from EnglandScience authorsCosmologistsPhysicists from England
Original Language: English
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Ch. 2, pp. 36-37
https://en.wikiquote.org/wiki/John_D._Barrow
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John D. Barrow
John David Barrow, FRS (November 29, 1952 – September 27, 2020) was an English cosmologist, theoretical physicist, mathematician, writer of popular science, and an amateur playwright.
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