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What’s more real: time itself, or your perception of it?

Posted

November 12, 2025

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We made this video in partnership with Unlikely Collaborators.

David Eagleman, PhD, Brian Greene, PhD, and Dean Buonomano, PhD, explore one of science’s strangest questions: what is time?

From Einstein’s spacetime theory to the brain’s internal clock, they examine whether time is an external property of the universe or a mental construct. By connecting physics and neuroscience, they unpack the idea that how we experience time may differ entirely from how it actually works.

Guests & Subjects Covered

What’s more realDean Buonomano PhDFrom Einsteins

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What’s more real: time itself, or your perception of it? · Big Think · Sentinel