Lead affects outcomes. Shared environment doesn't affect outcomes. Lead is a part of shared environment. Anyone want to explain what's up?
@argletargle I was under the impression lead was a big deal that affected many people, especially during the past.
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@slatestarcodex Google gives http://tinyurl.com/peszghg saying 1 to 5% post-1988. 10% get lead→effect of lead diminished 10x in environ study.Thanks. Twitter will use this to make your timeline better. UndoUndo
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