If animal cancer tests are reasonably accurate in predicting the probability, sites, and severity of human cancers, then regulation of carcinogens is on firm ground. But if the tests are poor predictors of human cancer, then regulation of exposure to chemicals rests on quicksand.

Aaron B. Wildavsky (1930–1993) was a Research Fellow and founding member of the Board of Advisors at the Independent Institute.
Energy and the EnvironmentEnvironmental Law and RegulationScience and Public Policy