The Physics That Makes Time Travel IMPOSSIBLE | Leonard Susskind

Описание: Every movie, every story, and every dream about time travel gets it completely wrong. Not because the technology doesn't exist yet, but because the deepest laws of physics make time travel fundamentally, absolutely, and mathematically impossible.

In this deep dive, we explore why the universe is "chronology protected." From the logical nightmare of the Grandfather Paradox to the microscopic chaos of Entropy and the Second Law of Thermodynamics, we break down why reality itself refuses to let us go back.

What we explore in this video:

The Paradox Problem: Why the Grandfather Paradox isn't just a story—it's a mathematical wall.

The Arrow of Time: How Entropy and Thermodynamics define our one-way journey.

Hawking’s Secret: The Chronology Protection Conjecture and why nature destroys time machines.

Quantum Realities: Why decoherence makes reversing the past impossible.

The Block Universe: If the past is fixed, can we ever truly change it?

Time travel is the ultimate human fantasy, but the truth is far more fascinating. The laws that forbid time travel are the same laws that make our existence stable, meaningful, and real.

#Physics #TimeTravel #Science #Spacetime #Astrophysics #QuantumMechanics #GrandfatherParadox #Thermodynamics #StephenHawking #GeneralRelativity #Cosmology #Educational #Documentary #Universe #Space #Reality