“This is not a conspiracy!” Stewart retorted. “But this is the problem with science. Science is incredible, but they don’t know when to stop and no one in the room with those cats ever goes, ‘I don’t know if we should do that.’ They’re like, ‘Curiosity killed the cat, so let’s kill 10,000 cats to find out why.’” Many viewers condemned Stewart for his comments, with one person writing on Twitter: “He’s spitting harmful conspiracy theories… so that’s fun.” “Oh my god Jon Stewart is a lab leak believer? Oof,” posted another. A third said: “That was painful to watch. I feel like I just learned my favourite uncle is a conspiracy nut.”