In the face of great uncertainty, how do you make decisions? Can you really apply the lessons of the past to the present and the future, to navigate seemingly new situations and get what you want out of business and life? Ray Dalio, co-chief investment office at Bridgewater Associates and author of several books, including "Principles: Life and Work", digs deep into these questions with a16z's Alex Rampell and Sonal Chokshi.