evidence: 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? [...] We will sometimes fact-check something that’s substantially the same as something we’ve talked about before. Usually, if we do that, it tends to be that he said it once in a random speech, but then, at a high-profile event, he said it again. But generally speaking, if Trump or anybody else repeats something that they have said before, we’ll maybe do a social media post. Because it takes time. It takes time to research experts. When a claim comes up in debate, if it’s straightforward enough, it might just require some statistics, and we can get that up within an hour. But if it’s a novel claim that we haven’t looked into and that requires a decent amount of reporting, it’s going to take us, most likely, until the next morning to publish something substantive on that.