The video below is an interesting BBC report into the Royal Mint and the cashless society. Prof. Bernardo Batiz-Lazo, formerly of Queen's and an expert on the cashless society, is interviewed by Jon Sopel in this report (hat tip - Chris Colvin).
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.