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If you show that lead damage to the ACC of the brain causes drug addiction, then the moral stance for outlawing drugs (but not lead production) becomes invalid as well. Even the idea that people are violent because they're poor is now highly questionable.
There could *even* be a recasting of hippie culture from the 60s and 70s. Instead of "they heroically changed the world for the better" we could now say "they were just like other crazy lead poisoned kids, they had the money and education to stay out of jail."
