Guardian: Well, it was nice while it lasted. The action by the world’s central banks to prevent a death spiral in global financial markets prompted a relief rally, but it lasted just 48 hours. Now it’s back to business as usual, with shares tumbling, awful economic news and banks whingeing about their bail-out terms. In all likelihood, state intervention means there will not be an implosion of the financial system leading to a 1930s-style depression. Central banks have made it clear that they …