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It needn't be coincidental (although it may be). Nor does it need to be about tides.

City life and brick and mortar dwellings have made us unaware of a very basic aspect of the moon cycle : a full moon means lights. Which may have had very practical effects in the way of life of your basic hunter-gatherer tribesman, especially pre-fire.

The fact that women's cycles are very variable means the adaptation could have been a weak one ; and that synchronisation within the tribe may have helped to adjust the cycles to the moon's cycles. And maybe the synchronicity happened only because once a yearly cycle was too long for reproductive success, another rythm was needed - and the one given by the moon was fairly convenient for biological purposes.

Un roi sans divertissement est un homme plein de misères

by linca (antonin POINT lucas AROBASE gmail.com) on Wed Aug 22nd, 2007 at 10:45:36 AM EST
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