He is right or wrong depending on the range of environment allowed to change

送交者: HunHunSheng 于 2007-04-10, 16:19:32:

回答: 洪昭光妙语录由老汉于 2007-04-10, 14:14:04:

Life expectancy increased from 30 to current 70s
in the past thousand of years. So Dr. Hong is right
if envirment is alloed to change from one extreme to the
other. But if the range is limited to what we already have,
he is not correct.

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