We’ve all met them. They’re our coworkers, our friends, our family members. They are young and old, rich and poor, some with education, others armed only with a laptop or a library card. But they all have one thing in common: they are ordinary people who believe they are actually troves of knowledge. Convinced that they are more informed than the experts, more broadly knowledgeable than the professors, and more insightful than the gullible masses, they are the explainers who are more than happy to enlighten the rest of us about everything from the history of imperialism to the dangers of
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