In the course of their conversation, Ocasio-Cortez and Thunberg discuss what it is like to be dismissed for their age, how depressed we should be about the future, and what tactics, as an activist, really work. Ocasio-Cortez speaks with her customary snap and brilliance that, held up against the general waffle of political discourse, seems startlingly direct. Thunberg, meanwhile, is phenomenally articulate, well-informed and self-assured, holding her own in conversation with an elected official nearly twice her age and speaking in deliberate, thoughtful English. They are, in some ways, as different as two campaigners can get – the politician working the system with Washington polish, and the teenager in her socks and leggings, working from her bedroom to reach the rest of the world. There is something very moving about the conversation between these young women, a sense of generational rise that, as we know from every precedent from the Renaissance onwards, has the power to ign...