Mr. Chair, at the beginning we thought about whether we could use social insurance numbers. There were a few problems with that and reasons we didn't. It would have taken a lot longer to do the systems development that we would have needed to do to incorporate those. It would have placed a burden on employers to provide those, so we didn't do it because it was going to take too long and it was going to delay the program.
You also have to recognize that once you have a program in place, coming in with different measures can be complicating at that stage. Even if you think you might want to do something, once you have it in place and it's running and you're largely comfortable that you'll be able to deal with—