Some of his top counterfactual claims—ones that he has reiterated every few days throughout his presidency—are that the border wall is being built; that the U.S. economy is the best it has ever been; and that he passed the biggest tax cut in history. The reiteration highlights the problem with fact-checking as an antidote to the lying: while the lying is repeated, fact-checking is administered only once. The lie dominates in the public sphere. Worse, the fact-checking articles themselves, appearing soon after the lie is uttered in public or on Twitter, serve as a gateway for the lie’s entrance
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