World-famous scientist Stephen Hawking sets three ordinary people a series of fun challenges to show them how to think like a genius. Can they work out why they exist at all? Is it destiny or pure chance?

Originally released by Public Broadcasting Service (U.S.), 2016. Streaming video file encoded with permission for digital streaming by Infobase on February 13, 2017.

Why Are We Here?(3:03) -- Magic or Magnets? (2:09) -- Laws of Nature (3:38) -- Pendulum Martini Experiment (3:13) -- Pendulum Martini Experiment Results (3:56) -- Determinism (2:58) -- Human Consciousness (2:29) -- Free Will Experiment (4:04) -- Free Will Experiment Results (2:12) -- Quantum Physics (3:02) -- Subatomic Test (4:10) -- The Uncertainty Principle (1:56) -- Uncertainty Principle and Determinism Test (2:40) -- Uncertainty Principle and Determinism Results (2:26) -- Why We Are Here Experiment (2:06) -- Why We Are Here Results (3:28) -- Many-Worlds Theory (2:23) -- Summary: Why Are We Here? (2:19) -- Credits: Genius By Stephen Hawking: Why Are We Here? (0:35).