Has Barack Obama's presidency already failed? In normal times, this would be a ludicrous question. But these are not normal times. They are times of great danger. Today, the new US administration can disown responsibility for its inheritance; tomorrow, it will own it. Today, it can offer solutions; tomorrow it will have become the problem. Today, it is in control of events; tomorrow, events will take control of it. Doing too little is now far riskier than doing too much. If he fails to act decisively, the president risks being overwhelmed, like his predecessor. The costs to the US and the world of another failed presidency do not bear contemplating.

What is needed? The answer is: focus and ferocity. If Mr Obama does not fix this crisis, all he hopes from his presidency will be lost. If he does, he can reshape the agenda. Hoping for the best is foolish. He should expect the worst and act accordingly.

Yet hoping for the best is what one sees in the stimulus programme and – so far as I can judge from yesterday's sketchy announcement by Tim Geithner, Treasury secretary – also in the new plans for fixing the banking system. I commented on the former last week. I would merely add that it is extraordinary that a popular new president, confronting a once-in-80-years' economic crisis, has let Congress shape the outcome.