THE VIDEO SHELF · arrow of time
Why is Time a One-Way Street?
Leonard Susskind's Santa Fe Institute talk on the arrow of time: why the past differs from the future when physics equations are time-symmetric. He covers entropy, cosmology and Boltzmann brains.
Why HN readers recommended it
HN commenters recommend it as a clear explanation of why time runs one way, from a leading physicist.
This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.
Video & recommendation details
- Creator / channel
- Santa Fe Institute
- Topic
- arrow of time
- Format
- lecture
- Level
- intermediate
- HN recommenders in dataset
- 2
- HN mentions in dataset
- 3
- Recommendation years in dataset
- 2014–2022
These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.
From the original HN conversations
Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.
Leonard Susskind talked about this idea and expanded on it in his talk 'Why is time a one way street' Highly recommend the talk. [VIDEO]
dave809 on Hacker News · 2014-06
In The Disappearing UniverseOne interesting question of this is if science changes once the other galaxy groups disappear. By that I mean if a human was to redo all previous experiments have we lost any data that would result in us building a different model of the universe …
WindyLakeReturn on Hacker News · 2021-04
In The Expansion of the Universe
Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.