“[D]evil’s advocates . . . engaged in the time-honored process of arguing one side of a proposition in order to test the other’s flaws.
That name dates back to the 17th century, when the Roman Catholic Church created an office popularly known as the advocatus diaboli — a person tasked with making the case against the canonization of new saints, scrutinizing every report of their miracles and virtue. How could a claim be trusted, the thinking went, if it hadn’t been rigorously tested?”
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