Why Cause and Effect Are Not Real | Leonard Susskind

Описание: We think it’s undeniable: the past causes the future. If A causes B, A must happen first. But at the fundamental level of quantum mechanics and relativity, causation dissolves. It turns out, cause and effect are not the basic structure of reality—they are just an emergent illusion created by our macroscopic perspective.

In this video, we explore why causation is not a fundamental law of physics. From the time-symmetric equations of Sir Isaac Newton to the mind-bending reality of Wheeler's delayed-choice experiment and quantum entanglement, we break down how the "Arrow of Time" actually emerges from entropy and thermodynamics, not from foundational physics. Discover why the universe operates on mathematical consistency and quantum correlations, rather than a simple chain of causes and effects.

Chapters:
0:00 - The Greatest Illusion in Physics
1:18 - Classical Physics: Newton & The Arrow of Time
3:45 - Entropy and the Second Law of Thermodynamics
5:30 - Quantum Mechanics: Does the Future Change the Past?
7:15 - Wheeler’s Delayed Choice & Retrocausation
9:05 - Relativity, Spacetime, and Observer-Dependent Reality
11:20 - Why Determinism and Free Will are Misunderstood
13:40 - The Map is Not the Territory (Conclusion)

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Let me know your thoughts in the comments: If the past doesn't strictly determine the future, do we actually have free will?

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