While stimulating the economy during a downturn is important, the size of the stimulus needs to be calibrated, especially if it leads to very high debt
Historically, most debt and inflation crises have occurred when governments that could have met their obligations in full instead chose inflation or default
Typically, a US president announces a new Fed chair a few months before the incumbent's term ends - just enough time for Senate confirmation hearings and a smooth transition
As impressive as China has been at building roads, bridges, and houses, its real estate construction boom is coming to an end, and there is no reason to expect a smooth landing