organized that way, as bray done brains are like companies to use a phrase from the neurobiologist george streeter. as they grow they re-organize to become efficient. there's actually -- it's highly debated still whether -- for the most part most of the core text of -- cortex of your brain can be found in every mammal. one or two parts where people debate whether it's new to primates, let's say, but even in those cases it's pretty clear to a lot of us that there is no neocortex. it's actually just certain parts of to brain have grown bigger because they developed for longer in development. so, i guess my -- so, just to say that one of the most deeply held views, cherished views of human nature is imbedded in the trying brain idea and it's fundmentally flawed and i must say that the law is -- the law embodied the trying brain, economics embody -- this idea that we have -- that your mind us a battle ground between emotion and cognition. that those two are in battle to control your behavior. that is just a myth, basically. so how do people respond? it depends, actually, on who you ask. right? so, evo