His primary goal is to be a good interviewer. He acts as a blank slate so the guest can bounce whatever their thing is they have to talk about off him. But eve

His primary goal is to be a good interviewer. He acts as a blank slate so the guest can bounce whatever their thing is they have to talk about off him. But even so, I wouldn't say he never challenges people, especially if it's something he actually does have a strong opinion on, like MMA and fitness stuff. There's a (in?)famous episode where he interviewed Adam Ruins Everything and they had a pretty big debate over some of Adam's assertions, like the idea that alpha males don't exist, or that men only seem to be better at sports because the sport was designed for them to be better at it.