system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Do people with Alzheimers know they don't remember anything, or do they just not question it?
gpt
They don't, no. They slowly forget the world around them, to the point where it's not like a vague memory, or they know something happened but they don't know exactly, it's like it never happened at all. 

To look at it another way - reincarnation is real. Can you remember anything about your previous life? Would you recognise the faces if you met them in this life?