In this episode we start in 2069 — when we just might be able to delete mental illness from our brains — and work back to the present. On the way, we learn about "neurodiversity" and how conditions like hypomania could come to be valued, and we speak to Arianna Huffington, founder of The Huffington Post who created a wellness startup after collapsing with exhaustion. Is the future about hacking our bodies to turn us into "short sleepers" who only need four hours a night?