3 Dimensions Fundamental

Quote : Martin Rees in Just Six Numbers – The 3 spatial dimensions are a fundamental feature of our universe, any other number and it / we could not exist. eg the alimetary canal of a higher animal in 2D splits it in two unless it ingests and excretes through the same orifice – messy prospect. Time is another dimension, but is distinctly different from the others, due to its irreversible directionality.
Ref : ISBN 0-297-84297-8 (9 780297 842972) Weidenfeld & Nicholson (page 3)

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