This episode contains strong language. Inauguration Day was supposed to bring vindication for adherents of the pro-Trump conspiracy theory QAnon.Instead, they watched as Joe Biden took the oath as the 46th president of the United States.What happens to a conspiracy theory and its followers when they are proved wrong?Guest: Kevin Roose, a technology columnist for The New York Times. For an exclusive look at how the biggest stories on our show come together, subscribe to our newsletter. You can read the latest edition here.Background reading: As Mr. Biden took office and Mr. Trump landed in Florida, with no mass arrests in sight, some QAnon believers struggled to harmonize the falsehoods with the inauguration on their TVs.Valerie Gilbert posts dozens of times a day in support of QAnon. Her story hints at how hard it will be to bring people like her back to reality.What is QAnon? Here is an explainer on the “big tent conspiracy theory.”For more information on today’s episode, visit nytimes.com/thedaily