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In following the discussion of global warming and related issues in the press and the blogosphere, I have been struck repeatedly by the assumption or expression of certain beliefs that strike me as highly problematical. Many writers who are not scientists themselves are trading on the prestige of science and the authority of scientists. Reference to “peer-reviewed research” and to an alleged “scientific consensus” are regarded as veritable knock-out blows by many commentators. Yet many of those who make such references appear to me to be more or less ignorant of how science as a form of knowledge-seeking and scientists as individual professionals operate, especially nowadays, when national governments―most notably the U.S. government―play such an overwhelming role in financing scientific research and hence in determining which scientists rise to the top and which fall by the wayside.
I do not pretend to have expertise in climatology or any of the related physical sciences, so nothing I might say about strictly climatological or related physical-scientific matters deserves any weight. However, I have thirty-nine years of professional experience―twenty-six as a university professor, including fifteen at a major research university, and then thirteen as a researcher, writer, and editor―in close contact with scientists of various sorts, including some in the biological and physical sciences and many in the social sciences and demography. I have served as a peer reviewer for more than thirty professional journals and as a reviewer of research proposals for the National Science Foundation, the National Institutes of Health, and a number of large private foundations. I was the principal investigator of a major NSF-funded research project in the field of demography. So, I think I know something about how the system works.
It does not work as outsiders seem to think. ...
Finally, we need to develop a much keener sense of what a scientist is qualified to talk about and what he is not qualified to talk about. Climatologists, for example, are qualified to talk about the science of climatology (though subject to all the intrusions upon pure science I have already mentioned). They are not qualified to say, however, that “we must act now” by imposing government “solutions” of some imagined sort. They are not professionally knowledgeable about what degree of risk is better or worse for people to take; only the individuals who bear the risk can make that decision, because it’s a matter of personal preference, not a matter of science. Climatologists know nothing about cost/benefit cosiderations; indeed, most mainstream economists themselves are fundamentally misguided about such matters (adopting, for example, procedures and assumptions about the aggregation of individual valuations that lack a sound scientific basis). Climate scientists are the best qualified people to talk about climate science, but they have no qualifications to talk about public policy, law, or individual values, rates of time preference, and degrees of risk aversion. In talking about desirable government action, they give the impression that they are either fools or charlatans, but they keep talking―worst of all, talking to doomsday-seeking journalists―nevertheless.
In this connection, we might well bear in mind that the United Nations (and its committees and the bureaus it oversees) is no more a scientifc organization than the U.S. Congress (and its committees and the bureaus it oversees). When decisions and pronouncements come forth from these political organizations, it makes sense to treat them as essentially political in origin and purpose. Politicians aren’t dumb, either―vicious, yes, but not dumb. One thing they know above everything else is how to stampede masses of people into approving or accepting ill-advised government actions that cost the people dearly in both their standard of living and their liberties in the long run.
http://www.independent.org/newsroom/article.asp?id=1963
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