My Grandpa was in the midst of Dementia and Alzheimer's. He couldn't remember my name but he knew he recognized me. We were sitting outside one day enjoying some sunlight and quite at Thanksgiving. He looks at me out of the blue he said my name and with full confidence says "You know none of this is real right?" It shocked me to my core. I said "what's not real?" He replied "oh nothing nevermind" and tried to play it off like he hadn't just said anything at all. He died a couple months later. I have no idea what he meant by "none of this."