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What Creates Time? A Challenge to Scientific Orthodoxy

2025-01-31 Science & Technology
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Description

Scientist and author Julian Barbour joins Brian Greene to explain his heterodox views on the nature of time, entropy, and cosmic origins. This program is part of the Big Ideas series, supported by the John Templeton Foundation. Participant: Julian Barbour Moderator: Brian Greene 0:00:00 - Introduction 0:00:52 - Welcome to Julian Barbour 0:02:07 - Barbour's background 0:07:00 - Barbour's thinking on the Nature of Time 0:14:37 - Barbour talks about Einstein 0:15:34 - Barbour illustrates the idea of point particles in space 0:22:42 - Could Newton have done a better job describing Space and Time? 0:29:15 - How to characterize Entropy and the unfolding of the Universe 0:37:44 - The Arrow of Time 0:49:59 - Past Hypothesis and Newtonian Physics 0:57:41 - Newton's Theory and General Relativity 1:01:28 - Quantum Mechanics 1:04:40 - The Wheeler-DeWitt Equation 1:10:10 - Barbour's view of how complexity arises in the Universe 1:19:35 - Barbour's view of human perception of time 1:29:35 - Conclusion 1:30:03 - Credits VISIT our Website: http://www.worldsciencefestival.com FOLLOW us on Social Media: Facebook: / worldsciencefestival Twitter: / worldscifest Instagram: https://www.instagram.com/worldscifest/ TikTok: https://www.tiktok.com/@worldscifest LinkedIn: https://www.linkedin.com/company/world-science-festival #worldsciencefestival #briangreene #cosmology #astrophysics #JulianBarbour #NatureofTime #entropy

Top Comments (10)

@walkingandroid1389 2025-02-02

I just want to say how much I appreciate that you remind us of the historical view (e.g. Newton and Mach on space and time) and the contemporary "consensus" (Einstein) view, before asking questions that are more pertaining to the work of your guests. It really gives us a faithful view of the state of science while allowing the exploration of more speculative ideas. And you do that on every topic, not just physics so thank you and your team for that.

48
@fredcrown-tamir698 2025-02-01

Amazing minds able to hold all this information over so long a period of time. Memory is the key to great minds.

22 1 replies
@chewyjello1 2025-02-03

I love Julian's chair. I also just love listening to him, even if I don't understand a word. He has the soul of a kind and wise philosopher.

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@1916vg 2025-02-01

Thank you. Also if I may, then Dr Greene, a final summation of the takeaways (in your style) would be of great benefit to the viewers.

15
@Davidbrucekeene 2025-03-08

This is one of those conversations that will be a stepping stone. Right now? A person on Youtube. What is time? Kinda out here with popcorn trying to understand. And I love it.

11
@frowy1 2025-02-09

Good to see two people disagree so politely :)

10
@papermoonJanuarybloom2002 2025-02-16

Nice conversation. I would like to hear more from Julian Barbour. He is amazing.

8
@Martvandelay 2025-02-26

This discussion sorta blew my mind. Not only do I need to read The Janus Point now, I also gotta watch this video several times to wrap my head around it. Big ideas. Big!

8
@agecoochek-bo2qr 2025-02-11

Wow that was great. It almost felt like you were not meant to sit in on that.

4
@Scifiape 2025-02-10

I've never been more excited to watch a WSF edition.

3

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