Ziggurats were massive temple structures built by the Sumerians, Babylonians, and Assyrians. The Tower of Babel mentioned in the Old Testament may have been one of the first ziggurats. Click here to read an article about In Tempo, a massive unfinished ziggurat-like residential property in Benidorm (see picture below). This property stands as a testament to the extent and sheer madness of Spain's bank-fueled property boom.
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.