Scientific consensus has gotten a bad reputation—and it doesn’t deserve it

Consensus? It's complicated and does not involve A) everyone agreeing or B) everyone meeting for coffee.

Digital Desktop Wallpaper (via Flickr)

One of the many unfortunate aspects of arguments over climate change is that it's where many people come across the idea of a scientific consensus. Just as unfortunately, their first exposure tends to be in the form of shouted sound bites: "But there's a consensus!" "Consensus has no place in science!"

Lost in the shouting is the fact that consensus plays several key roles in the process of science. In light of all the consensus choruses, it's probably time to step back and examine its importance and why it's a central part of the scientific process. And only after that is it possible to take a look at consensus and climate change.

Standards of evidence

Fiction author Michael Crichton probably started the backlash against the idea of consensus in science. Crichton was rather notable for doubting the conclusions of climate scientists—he wrote an entire book in which they were the villains—so it's fair to say he wasn't thrilled when the field reached a consensus. Still, it's worth looking at what he said, if only because it's so painfully misguided: