The human is born with a hereditary capacity to be bright, stupid or anything in between. His starting position on the intelligence scale is predetermineda biological sentence, like the one that orders tigers to give birth to tiger cubs and the human female to produce human babies. But nothing prevents a normal man from enriching his intellectual birthright, if it is allowed to mature in a hospitable environment. The obverse is equally true. Potential geniuses, deprived of suitable stimulation, will never fulfill their endowment.
These hypotheses, which are widely accepted by behavioral scientists, are restated in a lengthy article by Arthur R....
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