Who are you, really? Neuroscientist Anil Seth lays out his fascinating new theory of consciousness and self, centered on the notion that we "predict" the world into existence. From sleep to memory and everything in between, Seth explores the reality we experience in our brains -- versus the world as it objectively might be. (This talk and conversation, hosted by TED science curator David Biello, was part of a TED Membership event. Visit ted.com/membership to become a TED Member.)