"Science is a hard taskmaster, and in the light of mounting evidence that suggestions of toxicity are for the most part ultimately confirmed by painstaking scientific inquiry, perhaps it is time to reexamine whether scientific standards of proof of causality - and waiting for the bodies to fall - ought not to give way to more preventative health policies that are satisfied by more realistic conventions and that lead to action sooner."

-- From an editorial in the New England Journal of Medicine, April 1987