Writing in the Wall Street Journal, two economists made the following prediction: "We believe that when investors awake from their depressed state, they will realize that they do not have to lend the U.S government money for the 10 years at a negative real yield".

1) By "negative real yield did they mean that the nominal interest rate on 10-year Treasury notes was negative? Explain

2) Why the real yield on 10-year treasury notes was negative? Explain