 When we come back, Nafis discovers more methods we can use to deter the spread of radicalization. And he said to me, he goes, Nafis, I can't live in that world. That world gives me anxiety. The world of QAnon, even if it's wrong, it at least tells me where the bad guy is. It gives me a direction of which way to point my gun. You're listening to Hidden Brain. I'm Shankar Vedantam.