Dube uses the RR data to check if high debt levels are indicative of lower future growth, or if instead high debt levels are predicted by lower past growth. Which way the data suggests causation goes has important implications for economic policy in our high-debt, low-growth world today. And what Dube found contradicts much of the public discussion around debt and growth.
Grantee Arindrajit Dube Examines Reinhart and Rogoff's Causal Claims
Reinhart and Rogoff’s 2010 paper “Growth in a Time of Debt” has recently come under scrutiny