evidence: On Thursday, PolitiFact published its 1,000th fact check of a claim made by Donald Trump. The publication, which usually refrains from wading into political discussions or weighing in on a politician’s overall character, took the opportunity to release an analysis of those years of work. Its finding? Trump lies a lot. "American fact-checkers have never encountered a politician who shares Trump’s disregard for factual accuracy," the authors wrote. "Ever since he descended the escalator at Trump Tower in 2015, we have encountered a firehose of claims." [...] Donald Trump makes so many patently false claims that are recycled from earlier claims, but with some slight variation. How do you decide whether it’s worth it to fact-check these kinds of endless falsehoods?