"The Fed chairmanship is not the kind of job where you want to surprise everyone with your choice of a total unknown. You don't want to surprise Wall Street"

This quote by David Jones recommends that when picking a Federal Reserve Chairman, it is necessary to pick somebody who is popular and respected in the monetary world. The Fed chairmanship is a highly prominent position, and it is important to select someone who is familiar to Wall Street and the financial industry. Picking an unidentified person could lead to uncertainty and instability in the markets, which is something that needs to be prevented. Jones is stressing the value of picking someone who is widely known and appreciated in the monetary world, as this will help to ensure that the markets stay steady which the Federal Reserve has the ability to efficiently carry out its responsibilities.