If we were to have a financial crisis, then the central bank might be forced to guide monetary policy by other considerations rather than inflation per se. We want to avoid that distraction by making sure the financial system remains strong. We see it as a serious attempt to fully gear monetary policy actions to inflation considerations.
It’s difficult to say that you can avoid crises, but there is less chance if the authorities are making a coordinated attempt to stop them. As much as we can we want to keep the price stability and financial stability mandates distinct. That might not always happen but you have to at least try.