One of the prevailing themes of the last decade has been the rise of social and political polarization. From the chambers of Congress on through your Thanksgiving dinner tables, it’s increasingly difficult for both sides of the political divide to find common ground, even on seemingly trivial matters.

It isn’t just me saying this, either: Academic researchers spend hours trying to find the roots of our fractiousness, prominent writers ask the question in the titles of their books, social media platforms intentionally sequester users into their own filter bubbles, and...