The theory of memory spores: human memories have a physical form
- In the near future, humanity discovers that memories aren't simply brain waves, but a colony of microorganisms called spore crystals.
- These half-organic, half-mineral crystals grow in the brain's hippocampus, and their colors correspond to different types of memories: gold for happiness, blue for sadness, and black for trauma.
- Specialists known as memory agronomists can cultivate and harvest other people's memories, turning them into a new kind of drug called memory dust.
