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 the matter is already settled ... 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 ... Consensus is invoked only where the science is not solid enough ... Nobody says the consensus is that the sun is 93 million miles away. It would never occur to anyone to speak that way.
Michael Crichton, 2003 Caltech lecture "Aliens Cause Global Warming"