PBS Space Time PBS Space Time

Is The Future Predetermined By Quantum Mechanics?

Sep 14, 2026 · 21m

Summary

PBS Space Time explores whether the future is predestined by combining Einstein’s block universe with quantum mechanics. The episode contrasts the non-deterministic Copenhagen interpretation with the deterministic Many Worlds interpretation, analyzing how wave function collapse and entanglement interact with the relativity of simultaneity. It concludes that while the global wave function evolves deterministically, individual conscious experience remains undefined until it intersects specific entanglement networks.

Topics discussed

Sponsors: Indeed and Gatorade Spacetime and the Block Universe concept Relativity of the present and eternalism The dilemma: Defined block vs undefined future Quantum mechanics and wave functions Sponsors: Indeed and Gatorade Copenhagen interpretation and non-determinism Many Worlds interpretation and determinism Copenhagen interpretation vs Relativity The problem of multiple observers collapsing wave functions Sponsors: Indeed and Gatorade Many Worlds and the branching block universe Decoherence and entanglement networks Determinism in Many Worlds and the nature of 'now' De Broglie-Bohm pilot wave theory Conclusion: Does the future already exist? Sponsors: Indeed and Gatorade Outro and preview of next episode Q&A: Relativity of simultaneity and eternalism Q&A: The duration of the present and consciousness Q&A: Pop culture references and closing remarks
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