The Past Is Not Gone | Leonard Susskind

Описание: #Physics #TheoreticalPhysics #TimeAndSpace #LeonardSusskind

The Past Is Not Gone | Leonard Susskind

We talk about the past as if it has vanished — erased by time, lost forever. But modern physics tells a very different story: the past may still exist as part of the structure of spacetime itself. Understanding this is not just a philosophical curiosity; it reshapes how we think about time, causality, memory, and the universe we inhabit right now.

In this long-form exploration, we examine what physics actually says about time. Using relativity and modern spacetime concepts, we show why the past is not destroyed or overwritten, but instead remains embedded in the four-dimensional structure of reality. This is not speculation — it is a direct consequence of how space and time are woven together by physical law.

Physics does not describe a universe that forgets. It describes a universe that records everything — permanently.

🔍 Key insights you will gain from this video:
Why relativity treats past, present, and future as equally real
How spacetime preserves events rather than erasing them
Why the “flow” of time is not a fundamental feature of physics
What it means for causality, memory, and determinism
How this view of time changes our understanding of reality

📌 Grounded statements from science and policy thinking:
“In physics, time does not delete information — it orders it.”
“Spacetime does not forget; it only constrains.”
“Understanding time is essential for understanding responsibility, causality, and long-term consequences.”

👥 Who should watch this video?
Students of physics, cosmology, and philosophy of time
Researchers and professionals interested in spacetime and causality
Educators and science communicators
Policy thinkers concerned with long-term consequences and irreversible decisions
Anyone questioning whether the past is truly gone
If you value slow, careful explanations that respect the depth of the subject, this channel is built for you. Subscribe for more long-form explorations, share this video with others who think deeply about time and reality, and stay connected as we continue uncovering the hidden architecture of the universe.

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Disclaimer:
This channel is not officially affiliated with Leonard Susskind. The content is independently created, inspired by his educational style, and intended solely for educational purposes.