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Does the Past Still Exist?

Sabine Hossenfelder · explainer · Watch on YouTube

What it is

Sabine Hossenfelder explains how special relativity leads to the block universe, in which past, present and future all exist equally, and asks what that means for whether the past still exists.

Why Hacker News recommends it

HN commenters share it as a clear explanation of the block universe and relativity of simultaneity.

  • 1 people recommended it
  • 1 different months
  • 0 strong recommendations
  • first 2022, last 2023

What HN commenters said

  1. “This video by Sabine Hossenfelder explains it nicely”

    Clear explanation of the Block Universe

    glennonymous, 2023-07 · Recommendation · in “Telling the Bees”

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

Topics: block universe, relativity, spacetime, physics, philosophy of time

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