In Ronald Reagan's famous A Time For Choosing speech in 1964, he said "...the more the plans fail, the more the planners plan." We were reminded of this recently after pundits freaked out when the New York Federal Reserve injected reserves into the banking system to keep some short-term rates from rising.
A few things to keep in mind:
1) The jump in the overnight repo and federal funds rates was at the "tail" of the market. Most trading in the market was "normal," with average rates rising just a little, but some small amount of trading went off at a higher bid. In other words, this was NOT a serious system-wide shortage of reserves.
2) The reason most trading saw little impact is because there are $1.4 trillion of "excess reserves" in the banking system. So, contrary to much of the press coverage of this issue, the NY Fed repo operations were not due to a shortage of reserves.
3) The actual amount of reserve operations, somewhere between $45 and $75 billion per day, is well below the level of daily trading in reserves in previous decades. During the 1990s, for example, $150-250 billion in federal funds traded each day. In the 2000s, it went above $300 billion.
The recent turmoil is because two things have changed since 2008 that have created new problems for the banking system and the Fed. First, the Fed decided to stop managing policy like it used to. Second, new banking regulations have created liquidity problems in the banking system even when banks have ample capital, liquidity, and profits.
Central banks used to add and subtract reserves in order to stabilize overnight rates. Now, central banks globally have injected massive amounts of excess reserves into the system and attempt to manage those reserves by moving interest rates directly. Excess reserves are potential money supply growth, and the Fed believes it can simply pay banks to hold those reserves, avoiding inflation. In Europe and Japan, central banks are trying to use negative rates to "force" banks to lend. In other words, central banks have upped their influence over the banking system through control of even more assets.