Nearly 40% of Americans already believe Covid-19 leaked from a lab. What happens if they turn out to be right?

What happens when it turns out that a “conspiracy theory,” once largely derided by mainstream media sources and fact-checkers, might actually be true?

As Glenn Kessler wrote in The Washington Post this week: “The source of the coronavirus that has left more than 3 million people dead around the world remains a mystery. But in recent months the idea that it emerged from the Wuhan Institute of Virology (WIV) — once dismissed as a ridiculous conspiracy theory — has gained new credence.” On Wednesday, President Biden directed U.S. intelligence agencies to launch an investigation into...