Thank you. That's an excellent question.
I think one thing that economists and monetary policy-makers have learned over the past 30 years is that an important part of keeping inflation on target, whatever that target is, is about keeping expectations anchored. This is why the communication of monetary policy is so important.
If you look at the evolution of Canadian monetary policy or that of other countries, you'll see that communication, which used to be intentionally obfuscating, is now intentionally transparent, because they're trying to make it very clear what their goals are and they're trying to make it very clear what actions they're going to take to achieve those goals.
What I mean by anchored expectations--and you can see this if you look at inflationary survey data about future inflation expectations--is that those expectations don't seem to change much in response to shocks. So you have a big positive shock to the economy or a big negative shock to the economy, and those expectations for inflation two years or five or more years down the road are not perfectly constant, but they are remarkably stable, more stable than they were in the past and more stable than they are in other countries that do not have inflation targeting. This is one of the big benefits of inflation targeting.
As I think I said earlier, one of the huge advantages of having well-anchored expectations is that when a shock happens and the central bank wants to respond aggressively, it can do so and still maintain its credibility and its credible commitment to that target. Financial market participants believe that they will come back to that target--that's why those expectations aren't moving--and it gives the central bank the latitude in the short run to take more aggressive actions than it could otherwise take.
You talk about the fiscal advantage. I think expectations play a role in the fiscal advantage as well. I don't think we want to get into a discussion--I don't think--about whether we are on the appropriate fiscal track, but I do think that expectations play a key role. In the extreme cases that we're now observing in parts of Europe, expectations are driving the fiscal crisis.