Safe Haven

What is a safe haven? What role should they play in an investment portfolio? Do we use them only to seek shelter until the passing of financial storms? Or are they something more? Contrary to everything we know from modern financial theory, can higher returns actually come as a result of lowering risk?  

In Safe Haven by hedge fund manager Mark Spitznagel, these questions and more are answered from the logical and unique perspective of one of the top practitioners of safe haven investing and risk mitigation in the world.