Within forty-eight hours in the fall of 2014, buyers in the Sotheby's and Christie's New York auction houses spent $1.7 billion on contemporary art. Non-taxed freeport warehouses around the globe are stacked with art held for speculation. One of Jeff Koons' five chromium-plated stainless steel balloon dogs sold for 50 percent more at auction than the previous record for any living artist. A painting by Christopher Wool, featuring four lines from a...