Interest rates have nowhere to go in the longer-run except up, you idiot. Armstrong has predicted what any rational individual could predict and he had expected that the FED will fulfill its duties.
Even Armstrong couldn't imagine that the sockpuppets of Goldman Sachs in the FED and ECB are so corrupt that they keep the interest rates so long so low. That is unprecedented you idiot - don't expect Armstrong can second guess the most corrupt and dishonest institutions of our age, the FED and ECB.