In fact science is all about coming to a consensus, but it’s about coming to a consensus based on data, experimentation, and evidence, a consensus that has reproducible results that are verifiable by reference to the real world. After all, what is a scientific theory like the theory of evolution or Einstein’s theory of relativity but a statement of the current scientific consensus regarding a major scientific topic? What is peer review but quality control (making sure the scientific methodology is sound) coupled with testing new science against the current consensus to see where it fits in or where it exposes weaknesses? What is science but attempting to forge a consensus regarding theories and statements that most accurately describe the universe in a useful and predictable way?
Of course, questioning the consensus is often necessary in science. Indeed, it is critical to scientific advancement. However, there is a huge difference between questioning a current consensus and producing the data and experimental evidence to show that there is a real scientific question and JAQing off about science. The latter, raising spurious or already answered questions about a scientific finding or theory one doesn’t like, belongs to the province of cranks and denialists, and it is what they are very good at. The problem is that they aren’t very good at realizing why their questions are not worthy of the attention that they think they are. A lovely example of this showed up on the Discovery Institute’s propaganda arm, its version of Age of Autism, so to speak, namely Evolution News and Views. In it, the Kent Heckenlively of the creationist set, the ever excitable Casey Luskin, penned a typical bit of silliness in which he asks the question, When Is it Appropriate to Challenge the “Consensus”?
If Casey had two neurons to rub together, he could answer the question in two sentences and echo how scientists would answer the question: When you have an actual scientifically valid reason, based on science, evidence, experimentation, and observational evidence, to think that the current scientific consensus about something is in error, then it is appropriate to challenge the scientific consensus. When you don’t, then it isn’t.
It’s perfectly acceptable to challenge such a consensus, but if you don’t have the goods in the form of evidence, experimentation, and data to show that the consensus is in serious error, there is no reason for scientists to take your challenge seriously.
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