I was with you until you said “mastered”. I don't feel as if I've mastered them, but I'm certainly coming back to a lot more familiar and comfortable feeling with the subject matter. There's always something to learn in every file. As the deputy minister, you don't get to probe into every issue in as much depth as you'd like, but I feel that those two years of experience gave me a familiarity with the issues. When things come forward, I at least know enough about them to start the process of figuring out what we need to do, whether it's policy or what have you.
The experience on the Canada-U.S. front was helpful for me in linking our regulatory system with that of another jurisdiction and thinking about some of the regulatory challenges from a different perspective.