Conditional Reality

Spindrift Braindrain worked at a passport office, but spent his free time developing a theory of memory. He wrote papers outlining his belief that memory was stored in a fourth dimension of the brain, which everyone carried around with them like an invisible hat. Spindrift submitted his papers to distinguished scientific journals. He never heard back from any of them. When he retired from the passport office Spindrift collected all of his papers into a book, which he self published. His friend asked him how he got the idea of a fourth dimension for the brain. I forget, said Spindrift.