From the Federal Reserve's perspective, delving into the results of QIS4 is an appropriate response by the agencies. But we should also acknowledge that this follow-up work has its limits. We can go only so far with the data given to us. We must recognize that banks--understandably--might not yet have their data systems ready to develop Basel II risk parameters and that it might take more time before we see Basel II parameters based on truly credible systems. But, in our view, that is not a reason to stop working.