Wikipedia and the Wisdom of Polarized Crowds - Issue 70: Variables

Wikipedia and the Wisdom of Polarized Crowds - Issue 70: Variables

In 2013, James Evans, a University of Chicago sociologist and computational scientist, launched a study to see if science forged a bridge across the political divide. Did conservatives and liberals at least agree on biology and physics and economics? Short answer: No. “We found more polarization than we expected,” Evans told me recently. People were even more polarized over science than sports teams. At the outset, Evans said, “I was hoping to find that science was like a Switzerland. When we have problems, we can appeal to science as a neutral arbiter to produce a solution, or pathway to a solution. That wasn’t the case at all.”

Evans started his study on Amazon. You know the heading that says, “Customers who bought this item also bought”? Evans and his colleagues analyzed the top 100 items in this list for two “seed” books: Barack Obama’s Dreams from My Father and Mitt Romney’s No Apology. They repeated this process for each book in the top-100 list until they ran out of new titles. “The resulting ‘snowball sample,’ ” Evans and company wrote in their 2017 Nature Human Behaviour paper, “contained virtually all books in the largest strongly connected component…
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