On Thursday, the Bureau of Economic Analysis, commonly known as the BEA, will release revised data on the national income and product accounts going back to the start of 2019. This is an annual process, usually only mildly interesting to economists and ignored by everyone else. However, this year it’s more important since it could help clarify the trajectory of the economy at a critical time for both political and monetary policy choices. It’s also important because it could help resolve at least some of a yawning discrepancy between the estimates of output produced and income received in the American economy.