Actually the market sets the cost of bank funding and credit (ie. interest rates) not central banks. Yes of course central bankers and politicians will do everything in their power to keep credit growth and house price growth and the wealth effect growing to keep the economy growing and to delay the inevitable debt deflation and resultant housing and economic crash. Unfortunately, when people become no longer willing or able to borrow, and banks no longer willing or able to lend, then they'll merely be pushing on a piece of string.
