Makes perfect sense: To combat a crisis which was caused by an overabundance of cheap money and a deregulated market we will put more money into the system and continue deregulating.
Actually, this is not what is happening here. A negative interest rate for central bank deposits means that instead of the central bank paying money to commercial banks, commercial banks are now paying the central bank. So if anything, this is taking money out of the system.
Overall, it's unlikely to change much at all.
"Insanity is doing the same thing over and over again, but expecting different results."
Why do people say this? This is not the definition of insanity. It is the definition of stupidity. Insanity is something very different, and the quote doesn't make sense with it. It should be 'Stupidity is doing the same thing over and over again, but expecting different results.'
I guess it's in the eye of the beholder. Like so many things in life.