There are an awful lot of things that we know we don't know. Let me select a couple that I find most concerning.
We always talk as if we know what our output gap is here in Canada, what we should do, and what the consequences from inflation would be. That is subject to a lot of different methodologies and a wide range of possible estimates. We talk about financial stability issues, which Carolyn may wish to speak to. What's your biggest concern on the financial stability front that you don't know?