For several years now, regardless of what sort of economic challenges appeared, financial markets have enjoyed the safety net of central bankers coming to the rescue. But in recent months, you get the feeling they are losing their touch.
In the US we had three successive rounds of money-printing after the global financial crisis. In Europe, there was the famous "whatever it takes" speech by European Central Bank (ECB) President Mario Draghi. Japan has thrown the kitchen sink at its weak economy and stubbornly low inflation, while just about everyone else has reduced interest rates as much as they can, theoretically.
However, over the last few months we've seen some strong words and even stronger actions go almost unnoticed by financial markets.
Back in December, the ECB extended its asset purchase programme, broadened the range of things the programme can buy, cut its deposit rate further into negative territory, and stated that it would do more if necessary. That all sounds pretty generous, but markets were underwhelmed. European shares were sold off and the euro had its largest one day gain against the US dollar since 2009.
At the time, many people wrote that off as misplaced optimism in the lead up, making a set of otherwise impressive measures not good enough. But the trend of increasing central bank impotence has continued this year.