My wife was a carer for many dementia sufferers over the years and her mantra was always “we can go into their world but they can’t come into ours”. So many times she’s found relatives and friends telling their loved ones they’re wrong and trying to convince them otherwise, causing so much upset and anger.

She would just tell them to join in, in the same any you’d go into a child’s world when they conjour up some imaginary situation.