That's an interesting question. I would say a large part of it would be classified as technical. The system was developed during a time of restraint, so new spending got a lot of focus. That system has continued, and now we're in periods of surplus. The system needs to be adapted to reflect that.
There's an underlying weakness in the system. There really isn't good performance information, so government is indicating they're also reviewing this and they want to make changes. It will take time before there is a really effective expenditure management system in place, because the performance information isn't available now. It will take some time to develop, and it's hard to assess programs if you don't have that information. It will take time to modify the system, so there would be a good challenge over existing spending.
On some of the other issues, the use of supplementary estimates, that may in part be a question of timing. When do the main estimates come in? There could be issues like that to be looked at as well.