dr. warikoo. [applause] >> thank you. thank you for the nice introduction. it's really a delight to be here. i can see that many of the ideas in this book when i was on leave at russell stage foundation in new york a few years ago so it's nice to be back. having actually written the book and having it tell a coherent story, which wasn't quite there yet a few years ago. so this book is about, is there an echo in the room? okay. this book is about how students in your elite universities make sense of brace care, meritocracy and he called in the estates and britain. it's really sort of quality look at -- i realize i have no way -- i don't have a clicker. thank you and some going to talk a lot, this is kind of a focus on students perspective. i want to start by talking a little bit about inequality. united states and britain are highly unequal societies, and unusually unequal societies. if you look at this graph. if you look at horizontal access here, this is telling you the relationship between basically what wealthy people are and what the working class earns