Let’s look at another example

Jack who has dementia lives with his wife, Ella. Jack’s condition deteriorates. Ella decides to make an appointment with the doctor without Jack to discuss his medical condition and to make a decision regarding his medication. Ella discusses the issue with Jack’s sister as well, who asks her what she thinks Jack would have decided before he was diagnosed with dementia. Ella talks to the doctor and tries to imagine what Jack would have decided if given all the information.