Although not trained or competent as a scientist, Sowell tried to argue against the climate change that almost all scientists in the world had discovered affecting our environment and potentially causing great change in the future. Here he demonstrates excellent technique of ad hominum attacks. Since he had no science background and he had no data, he demeaned the scientists by referring to their scientific research conclusions as just another “hysterical crusade”. This of course did not persuade any scientists, but it placed doubt in the minds of many Americans who themselves did not understand the science but who found that the steps to slow and ameliorate the climate change would require extensive government activity, restrictions on private activity, and taxes to pay for the effort. For them, the political future would be much simpler if the climate change was the imagination of hysterics.