Most of us are lucky if we can remember what we had for breakfast yesterday. But one teenage girl in France can revisit precise moments from her life with such incredible detail that it feels less like remembering and more like stepping back into the room where it happened.

That’s the hook of Pop Mech’s new story, “She Can Mentally Time Travel—One of the True Human Superpowers. Why Did Everyone Think She Was Lying?” It follows a rare case of hyperthymesia, also known as Highly Superior Autobiographical Memory, where personal memories don’t fade the way they do for the rest of us.

Watch Pop Mech editors Andrew Daniels and Jamie Sorcher talk about “TL,” the teenager who says her memories are stored inside a white room filled with file cabinets, each one holding moments from her past. She can relive old experiences in almost cinematic detail—and even picture possible future events with unusual clarity.

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Andrew and Jamie talk about what makes this story so fascinating, why the girl was once accused of lying, and what her case could reveal about memory, consciousness, and the strange way our brains organizes time.

Watch the full episode above now, and find more installments of “The Astounding Pop Mech Show” on PopularMechanics.com.

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