A counterargument is provided by Borio and Lowe (2002), who perform an exhaustive historical study of financial market bubbles in many countries. According to the authors, opponents of bubble-popping fail to take sufficient account of the asymmetric nature of the costs of policy errors when faced with a suspected bubble: “If the economy is indeed robust and the boom is sustainable, actions by the authorities to restrain the boom are unlikely to derail it altogether.