Kenneth Rogoff, Professor of Economics and Public Policy at Harvard University and recipient of the 2011 Deutsche Bank Prize in Financial Economics, was the chief economist of the International Monetary Fund from 2001 to 2003. He is co-author of This Time is Different: Eight Centuries of Financial Folly (Princeton University Press, 2011) and author of The Curse of Cash (Princeton University Press, 2016).

With cryptocurrency prices plummeting as central banks start to raise interest rates, many are wondering if this is the beginning of the end of the bubble. Perhaps not yet. But a higher opportunity cost of money disproportionately drives down the prices of assets whose main uses lie in the future.