" we decided to take Drucker’s advice and follow the money. First, we dubbed the amount of cash and coin people spend each year trying to get out of their heads the “Altered States Economy.”29 And we didn’t mean this metaphorically; we meant it literally. “Getting out of our heads "

― Steven Kotler , Stealing Fire: How Silicon Valley, the Navy SEALs, and Maverick Scientists Are Revolutionizing the Way We Live and Work