Now, knowing the chaos surrounding every bank collapse it would be shocking but not surprising if Darling had misunderstood all this. Conspiracy theorists will note that, if he has slipped, it will be a good time for No 10 to send the dogs after him - punishing him for his collusion with Mervyn King over trying to stop Brown launching a second stimulus.
Darling was sounding mighty confident earlier, telling the BBC1 Politics Show "Mervyn King was right that all governments have to take a cautious stance. I speak to Mervyn King all the time so, no, I was not surprised." I would not be surprised if some knives come out for Daring now: this is how Brown operates. This story may just be the opening that Brown's attack dogs need.