Last week the Federal Reserve hiked the federal funds rate by ¼ of a percentage point for the fourth time since December 2015. The funds rate is still below the rate of inflation, which means the Fed is still a long way from becoming tight.

The Fed also presented a relatively detailed plan to begin unwinding its balance sheet. However, this plan means that fully ending QE will take at least a few years, probably more. In a policy environment where banking rules are (hopefully) moving away from the irrational toughness of the last several years, these reserves have the potential of spurring more economic growth and more inflation even as the Fed raises rates. In other words, it's hard to see the Fed making monetary policy "tight" anytime soon.

While these slow-motion maneuvers grab all the headlines, the real news is that QE didn't work. It was very hard to convince anyone of that between 2008 and 2015, but maybe now more people will listen to the evidence.

Yes, the Fed bought bonds. Lots of them. $3.5 trillion of them. And, yes, the Fed created new money – bank reserves – to pay for them. Most of those reserves, about 90%, ended up being stored as Excess Reserves – money that exists but is not circulating in the economy.

Those reserves did not boost the money supply. Those reserves did not boost stock prices. Those reserves did not boost bond prices. QE did not work. How do we know? Because the Fed stopped Quantitative Easing and the stock market continued to move higher – to record highs. Because the Fed stopped buying bonds and interest rates have not moved higher. Because the Fed has now announced that it will reduce its bond holdings and the stock and bond markets yawned.

More specifically, we know QE didn't work because M2 never accelerated when the Fed bought $3.5 trillion in bonds. Between January 1995 and September 2008, the M2 measure of money – all deposits in all banks – grew 6% at an annual rate. From September 2008 (the month the Fed started QE) to today, the M2 measure of money has grown at a 6% rate.

Milton Friedman said, "watch M2!" And the growth rate of M2 has not changed. What's more important is that economic growth actually slowed. Between January 1995 and September 2008 (which includes the 2001 recession), real GDP expanded at a 2.9% annual rate. During the current recovery, in spite of QE, real GDP has grown just 2.1% at an annual rate.