One of the things you have to remember about banks is that they are highly regulated financial institutions. We have a regulator, the Superintendent of Financial Institutions, who regularly supervises and inspects banks, and takes great care in examining the books and looking at, for example, assets that are written off.
I can't speak to whether that is needed, but you should understand that there is that oversight by the regulator.
Perhaps that requirement is redundant. I'll let Anthony answer that.