They might be lying to Joke to prevent him from getting agitated. My mom, when her dementia got bad, would start saying about 7 PM that she wanted to go home. She was in the home the she and dad owned for about 60 years. She meant her childhood home that she and her siblings had sold in 1983. We would tell her it was too late to take her there and we would take her in the morning. She would calm down and fall asleep. Next day, no knowledge of what had happened.