I think yes. Most people I deal with would say that there's not a big difference between 10 and five. One of the challenges in the focus on the numbers is the idea that 10 wasn't safe but five is now safe. Graham and others can speak more to that. It's really a matter of a number that's as low as it's reasonable to go with the analytical technology.
Whether the number is 10 or five might be the trigger when people have to do things, I think, but to me that's a bit of a red herring. I don't think that's the big issue here. The issue is how the sampling paradigm is changing.