In terms of the clusters, they're handled by the program branch, so they have the mechanism to make adjustments if they have to. They report annually, and I think there might be a chance to at least ask and see if there is opportunity to adjust the course of action. I think in their annual report they probably have those discussions, and there might be opportunities.
For the research we do internally, outside clusters, we do that all the time; we adjust. That's part of our project renewal process when we recycle projects; we come back and the scope may be quite different the second time around. It depends on where they are in the life cycle of the solution they're coming through.