the volume of trading is just the same as a large volume of water. If it is two or three times greater than normal, it must spread over a larger area, break the dams and do great damage. When the flood gates of Wall street are open and the millions of speculators and investors start to liquidate, all former records will be broken, the avalanche of selling will carry prices lower than the most sanguine pessimist ever dared to imagine. WD Gann, August, 1929