Thank you for being here this morning. It's very interesting.
I'd like to return to the issue of advance consent or advance directives and the concern that I think we all share about exposing vulnerable people to results that they would not want if they were to change their minds. I think particularly about people with advanced Alzheimer's. As I understand it, the suffering that we talked about doesn't have to be pain; it can be a condition.
I'd like you to take me through how you would see this working in practice, using the example of somebody with advanced Alzheimer's. We may have a situation whereby at the time they formulate this directive, they're clearly competent in every way, but they're looking ahead to the date when they might not be competent. How do we assure ourselves, as best we can, that their interests are really being protected?