Chapter
The Role of Causality in Our Understanding of Time
48:22 - 58:11 (09:49)
The speaker suggests that although the fundamental level of time may not have causality built in, there is a basic notion of causality that emerges at the macro level with which we experience time. He also explains the impact of gravity on time and suggests that it is possible to extend human lifespan for time travel.
Clips
The concept of time is essential to our experience and understanding of the world, from the way we perceive events to the precision of scientific measurements.
48:22 - 50:12 (01:50)
Summary
The concept of time is essential to our experience and understanding of the world, from the way we perceive events to the precision of scientific measurements. Despite the efforts of precision labs around the world, our understanding of time remains complex and difficult to fully articulate.
ChapterThe Role of Causality in Our Understanding of Time
Episode#232 – Brian Greene: Quantum Gravity, Big Bang, Aliens, Life, Death, and Meaning
PodcastLex Fridman Podcast
The human experience of time may emerge from a starting point that doesn't include causality, but at the macroscopic level, there will always be a fundamental notion of causality.
50:12 - 52:43 (02:30)
Summary
The human experience of time may emerge from a starting point that doesn't include causality, but at the macroscopic level, there will always be a fundamental notion of causality. Despite the counterintuitive properties of time explored by Einstein, causality will remain at the forefront of our understanding of time.
ChapterThe Role of Causality in Our Understanding of Time
Episode#232 – Brian Greene: Quantum Gravity, Big Bang, Aliens, Life, Death, and Meaning
PodcastLex Fridman Podcast
Theoretical physicist Michio Kaku discusses how Einstein's theory of relativity allows for the possibility of traveling through time, specifically traveling one million years into the future.
52:43 - 54:15 (01:32)
Summary
Theoretical physicist Michio Kaku discusses how Einstein's theory of relativity allows for the possibility of traveling through time, specifically traveling one million years into the future.
ChapterThe Role of Causality in Our Understanding of Time
Episode#232 – Brian Greene: Quantum Gravity, Big Bang, Aliens, Life, Death, and Meaning
PodcastLex Fridman Podcast
The extension of human lifespans allows individuals to witness the future, but travelling to the past remains hypothetical.
54:15 - 55:56 (01:41)
Summary
The extension of human lifespans allows individuals to witness the future, but travelling to the past remains hypothetical. Despite this, the idea of travelling to the future is allowed according to the universe.
ChapterThe Role of Causality in Our Understanding of Time
Episode#232 – Brian Greene: Quantum Gravity, Big Bang, Aliens, Life, Death, and Meaning
PodcastLex Fridman Podcast
Scientists propose that the manipulation of electric charges on the openings of a wormhole could create a temporal asymmetry, allowing for time travel.
55:56 - 58:11 (02:15)
Summary
Scientists propose that the manipulation of electric charges on the openings of a wormhole could create a temporal asymmetry, allowing for time travel. However, it remains unclear if the exotic matter needed to keep the wormhole open even exists.