“Asset bubbles are inevitable when the pool of good investment opportunities is much smaller than the pool of credit-money sloshing around seeking a higher yield. It really is that simple. It’s astonishingly easy to create hot money: just create the money in a central bank and then make it available to financiers, investment banks, global corporations and other Financial Elites at near-zero real rates of interest. It’s considerably more difficult to create a good investment opportunity: an investment that is worthy of the risk must have a sound base in fundamentals such as cash flow, return on investment, etc.”
http://charleshughsmith.blogspot.com/2013/06/why-serial-asset-bubbles-are-now-new.html