hackertube.io

Why is Time a One-Way Street?

Santa Fe Institute · lecture · Watch on YouTube

Fundamental physicsCosmology & astrophysics

What it is

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 Hacker News recommends it

HN commenters recommend it as a clear explanation of why time runs one way, from a leading physicist.

  • 2 people recommended it
  • 2 different months
  • 1 strong recommendations
  • first 2014, last 2022

What HN commenters said

  1. “Highly recommend the talk.”

    Susskind explains why time runs one way

    dave809, 2014-06 · Strong recommendation · in “The Disappearing Universe”

  2. “I recommend the whole thing if you aren't familiar with Boltzmann brains and boxes”

    Talk covering Boltzmann brains and an alternate bubble model of expansion

    WindyLakeReturn, 2021-04 · Recommendation · in “The Expansion of the Universe”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: leonard susskind, entropy, cosmology, boltzmann brains, theoretical physics

Also recommended by the same people