Theres a room, and in that room.

Theres a room, some where in the deep corners of your mind, Its kinda messy you know like an artsy room, and zig zagging across, around and generally all over the room are strands of wire like stuff with photos hanging from it.
The photos are your memories, important memories to be exact. important as in a moment that helps shape your life.
Inside this room is a demon type thing thats chained into your mind who puts the memories up, it taps in to your eyes and takes a photo and pegs it up on the next empty spot.
If the demon gets angry and pulls the wire down, or even worst burns the photos, you lose your memories (Amnesia)
If they burn then you’ve lost it forever, if they pull it down they can put it back up.
And you know how older people start to forget stuff, well thats because they don’t have much wire left so the demon starts taking down the lesser important things, and when some one gets Alzheimer’s Disease the demon has either died or run out of wire, making you go mental.

I can remember my 9th grade Science teacher telling us about this man who couldn’t remember anything new that happened to him. He was an American troop in WW2 who got shot in the head and survived it.
The problem was he couldn’t learn anything new.
I’m guessing either the room in his head was partly destroyed, his demon was killed, OR his demon escaped from the hole in his head.

If the demon escaped then we’ve got a problem.