I have sometimes compared financial buffers with air bags in a car: what we have done in recent years is let part of the financial sector remove all the air bags. And now there has been an accident, we can see the scale of the injuries.
We have to put reserves and buffers back into the system; they are the protection against serious damage in a downturn, and they are an integral part of sound finance. Such a large-scale reassessment is a matter for the medium term.