**T** he date was Jan. 20, 2021, and Stephen Miles Lewis was trying to keep the peace. Two weeks before, a mob of pro-Trump protesters had stormed the Capitol, and the circles Mr. Lewis ran in were now brimming with tension. Many of his closest friends had been outraged by what they saw. But he also knew someone who had been there, who now claimed that the violence had been stirred up by antifa agents disguised as Trump supporters. Mr. Lewis, a middle-aged man with a round face and a gray beard who goes by the nickname SMiles, sat at his desk, in front of a wall covered with posters of aliens, flying saucers and Bigfoot. In a YouTube video, he urged viewers to “take a step back and hopefully think, meditate, reflect on the times that we’re in,” to not “malign the others’ viewpoint.” He expressed frustration that the term “conspiracy theorist” was increasingly being used as an insult. After all, he pointed out: *“I* am a conspiracy theorist.” At the time, Mr. Lewis was trying to project calm, to help ensure that the community he’d been part of since he was 18 didn’t tear itself apart. But in the years since, he has found himself unsettled by the darker elements of a world he thought he knew. Over the past year, I’ve been part of an [academic research project](https://sites.manchester.ac.uk/eic/) seeking to understand how the internet changed conspiracy theories. Many of the dynamics the internet creates are, at this point, well understood: We know its capacity to help users find one another, making it easier than ever for people to get involved in conspiracy networks; we also know how social media platforms prioritize inflammatory content and that as a result, ideas and information that make people angry travel farther. What we felt was missing from this story, though, was what this period of change looked like from the perspective of conspiracy theorists themselves. My team has been speaking to researchers and writers who were part of this world or connected to it in the pre-social media era. And we’ve learned something surprising: Many of the people we’ve interviewed told us they, too, have spent the past few years baffled by the turn conspiracy culture has taken. Many expressed discomfort with and at times outright disgust for QAnon and the related theories claiming the 2020 election was stolen, and said that they felt as if the very worst elements of conspiracy culture had become its main representatives.