Jake begins this episode with a few thoughts on thought experiments. He questions the identity of things, how they change over time and how they remain the same. How do we see ourselves and how do we make sense of the multitudes within us? Jake’s musings on the nature of the mind segues appropriately into his conversation with neuroscientist Karen Campbell, whose research focuses on cognition and aging. The two explore how the brain and memory work. Karen discusses what research shows about aging populations, information, intelligence and integration. This episode ends with a taste of Cenk’s musical stylings, incorporating soundbites from the conversation - enjoy!