Prof. Sheila Dow was the external examiner of my PhD thesis. She is an extremely thoughtful and insightful economist. Well before the financial crisis, she was talking about the need for economists to think more about uncertainty - there are many things in life we cannot measure or quantify. In the video below, she talks about uncertainty, the financial crisis and regulation among other things.
According to Robert Shiller , speaking at Davos, Bitcoin is a perfect example of a bubble - story here . Shiller sees Bitcoin as a backwards step in the evolution of money. George Selgin , a free banker, takes an opposing view - click here . Although he doesn't believe that Bitcoin is money, he sees its development as a fascinating turn in the evolution of money. In particular, he lauds the fact that Bitcoin production is constrained and cannot be infinite. There is a short video below where Bitcoin explain how it works.