ALEX J. POLLOCK: Seven Possible Causes of the Next Financial Crisis. “The great financial historian, Charles Kindleberger, pointed out in the 1970s that over several centuries, history showed there was a financial crisis about once every ten years. His observation still holds. In every decade since his classic Manias, Panics and Crashes of 1978, such crises have indeed continued to erupt in their turn, in the 1980s, 1990s, 2000s, 2010s, and again in 2020. What could cause the next crisis in this long, recurring series?”