Why We're Polarized

by Ezra Klein

This will resonate with anyone who’s ever read the work of a serious climate change denialist. It’s filled with facts and figures, graphs and charts, studies and citations. Much of the data is wrong or irrelevant. But it feels convincing. It’s a terrific performance of scientific inquiry. And climate-change skeptics who immerse themselves in researching counterarguments end up far more confident that global warming is a hoax than people who haven’t spent much time studying the issue. This is true for all kinds of things, of course. Ever argued with a 9/11 truther? I have, and they are quite informed about the various melting points of steel. More information can help us find the right answers. But if our search is motivated by aims other than accuracy, more information can mislead us—or, more precisely, help us mislead ourselves. There’s a difference between searching for the best evidence and searching for the best evidence that proves us right. And in the age of the internet, such evidence, and such experts, are never very far away.