Throughout history, there have been repeated stock market crashes. It happens quite frequently, in fact. Since the credit super-cycle started in the United States in the early 1980’s, there have been three: 1987, 2001-2003, 2008-2009 (and four if you add the 1994 bond market massacre to the list). But why does this happen? And is there any way to figure out if it might happen again?