First, the research community is trapped within the paradigm that chemical carcinogens are the main causes of human cancer and, further, that these carcinogens are best identified in rodent bioassay experiments, despite all the evidence that these experiments are very poor estimators of what is carcinogenic for humans. As we’ve seen, once scientists start operating within a paradigm, it’s very difficult for them to see, much less embrace, any evidence that calls that paradigm into question.
