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But any suggestion that the child's deficiency
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might have a genetic origin
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is likely to be greeted with something approaching despair.
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If it's in the genes,
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it is determined and nothing can be done about it.
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This is pernicious nonsense on an almost astrological scale.
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Genetic causes and environmental causes
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are in principle no different from each other.
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Some may be harder to reverse,
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others may be easy.
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What did genes do to deserve their sinister,
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juggernaut-like reputation?