translation.en: In other words, we have these hijackers -- you've seen this slide before, from four years ago -- a parasite that infects the brain and induces even suicidal behavior, on behalf of a cause other than one's own genetic fitness.
translation.zh: 换句话说，生物界也有“劫机者” 这张照片我四年前也展示过 寄生虫感染了宿主的脑子 诱导宿主做出甚至自杀的行为 而不是宿主的“基因适应”。