There is a great excerpt in the opinion section of the WSJ today from a speech by Michael Crichton. While the topic is global warming, it has great application to the world of finance as well. The takeaway is anything where a consensus forms (or needs to be formed to justify its existence) is not science, but opinion. To take it further, it is likely the product of social proof, not rigorous, unbiased testing. Global warming, economic forecasts, next year’s earnings estimates; all merely biased opinions.
Crichton:
“I want to pause here and talk about this notion of consensus, and the rise of what has been called consensus science. I regard consensus science as an extremely pernicious development that ought to be stopped cold in its tracks. Historically, the claim of consensus has been the first refuge of scoundrels; it is a way to avoid debate by claiming that the matter is already settled. Whenever you hear the consensus of scientists agrees on something or other, reach for your wallet, because you’re being had.
Let’s be clear: The work of science has nothing whatever to do with consensus. Consensus is the business of politics. Science, on the contrary, requires only one investigator who happens to be right, which means that he or she has results that are verifiable by reference to the real world. In science consensus is irrelevant. What is relevant is reproducible results. The greatest scientists in history are great precisely because they broke with the consensus.
There is no such thing as consensus science. If it’s consensus, it isn’t science. If it’s science, it isn’t consensus. Period. . . .”