One need only consider the pig-headed refusal of R.A. Fisher to recognize the link between cigarette smoking and lung cancer to see that even a brilliant person can adopt subjective criteria for recognizing cause-effect relationships that result in the exclusion of recognition of such a relationship even when the epidemiological data is as strong as it gets. Considering the Fisher example, it is easy to see how some could adopt criteria of causality that effectively excluded cause-effect relationships in EMF epidemiology. See P.D. Stolley: When genius errs: R.A. Fisher and the lung cancer controversy, Am. J. Epidemiol. 133:416-425, 1991.