Maybe I can take the first crack at that.
First of all, in terms of what is a reasonable value, $650 million or some higher number, my understanding is that the $650 million exceeds what the current levels are in other countries. I am aware that other countries talk about unlimited liability, but you have to be very careful in how you interpret that. Those same countries will allow a nuclear utility to create a corporation where the only asset in that corporation is the nuclear plant itself, so inherently you're able to create a liability that is much lower than you might perceive it to be when people talk about unlimited liability. I think that needs to be clearly understood when we talk about comparisons between what Canada might do and what other countries might do.
I also understand that Bill C-20 has the ability to increase the level on an ongoing basis subject to approval and perhaps some level of review by NRCan. So there is a provision already built into the bill that allows an escalation of the dollar value if it is deemed at some point in time to not be adequate or not consistent with the CSC as it may evolve in time.
I don't know, Murray, if you have anything to add to that.