I consider massive hyperinflation a possible end game. Unlike many investors who are worried about it in the short term, I think such a scenario has 2 or 3 years to start developing. At the mint website it gives a brief (to brief to give much practical value) overview of 9 failed currencies in the last 100 years. Germany Weimar Republic from 1922-1923, Hungary from 1945-1946, Chile 1978,91, Argentina 1975-1992, Peru 1988-1991, Angola 1991-1999, Yugoslavia 1992-1995, Belarus 1994-2002, and Zimbabwe 2000-2009.
There are many other examples of severe inflation not mentioned such Mexico. My argument is that the government has not done enough yet to create such a scenario but Ben's helicopter is always a threat and eventually deflation could cause Bernanke to overshoot creating a massive inflation.
I would love to read more in depth on each of the 9 failed currencies mentioned. Understanding the playbook may be vitally important.