Yes. We're not going to remove all uncertainty. Medicine is largely a probabilistic discipline, and we're always making decisions under conditions of uncertainty. There will always be some uncertainty.
The question is, how much is too much? The line shifts with respect to that with time, but when there's too much uncertainty and the practitioners cannot come to ground on whether this condition should be considered incurable along the lines of what we've laid out or the person does not have capacity, then they should not go forward.