Death is not the deletion of the information. It is the end of the process that made it information about anything. The universe keeps the atoms and loses the map.

Navigation:This Moment and the Memory Layer · Two Copies, No Original

What death has to be

The previous essay left us with a clean but unsettling picture.

There is this moment, and there is the memory layer.

The moment ends all the time. It changes as attention moves, as sleep comes, as anesthesia takes hold, as a thought vanishes before it can be named. If identity depended on the uninterrupted presence of the moment, we would die constantly.

So death cannot be merely the end of present experience.

Nor can death be the disappearance of matter. Nothing disappears in that sense. The body remains. The atoms remain. The heat remains. The surrounding world receives every change. Physics does not subtract the creature from the universe.

If identity is moment plus memory layer, then death must be a statement about the memory layer.

The statement is this:

Death is the thermodynamic irrecoverability of the memory layer.

Not absence. Not a ghost leaving. Not a little reader stepping away from the book. Death is what happens when the layer that made future inheritance possible has been scrambled past recovery by any physically realisable process available within the relevant horizon.

The universe keeps the atoms.

It loses the map.

Interlude: The child and the beetle

8. The child and the beetle

One day, a child went walking in the woods.

On a fallen log, in a patch of sun, the child found the corpse of a large beetle with a shimmering green shell.

"Look at that," said the child. "What a beautiful beetle."