That, in turn, would harm the growth potential of the economy and thereby prepare the ground for weak growth to persist. Very low interest rates can also hamper the functioning of the money market: The lower money market interest rates are, the lower the incentive for banks to trade funds in the market rather than depositing them safely with the central bank.
Market participants might change their behaviour and get accustomed to the non-standard measures, which would be detrimental to the recovery of money markets. On our part, as soon as upside risks to price stability emerge, and with a view to avoid to contribute to the emergence of another asset price bubble, we would have to act accordingly.