Uploaded April 2025 | Updated September 2026, 2 weeks ago

---

Get all sides of every story and be better informed at https://ground.news/AlexOC - subscribe for 40% off unlimited access.

For early, ad-free access to videos, and to support the channel, subscribe to my Substack: alexoconnor.com

To donate to my PayPal (thank you): paypal.me/cosmicskeptic

- VIDEO NOTES

Brian Greene is a professor of physics and mathematics at Columbia University, director of its centre for theoretical physics, and the chairman of the World Science Festival. He is best known for his work on string theory, especially in his book “The Elegant Universe”, which turns 25 this year.

- LINKS

Buy The Elegant Universe (affiliate link): amzn.to/43ELeWX

- TIMESTAMPS

0:00 – What is String Theory?
7:41 – Can We Prove String Theory?
15:21 – What Would Einstein Make of String Theory?
16:41 – Is String Theory Scientific or Philosophical?
21:58 – Does String Theory Predict a Multiverse?
28:33 – Does Science Explain or Describe?
39:18 – What Are “Laws” of Physics?
46:02 – Is There Intelligence Behind the Universe?
54:05 – Brian’s View on Purpose
56:43 – Is There Any Evidence for the Multiverse?
1:05:31 – String Theory, 25 Years Later
1:08:35 – Does String Theory Matter in Practice?
1:11:58 – What is Time?

- CONNECT

My Website: alexoconnor.com

SOCIAL LINKS:

Twitter: twitter.com/cosmicskeptic
Facebook: facebook.com/cosmicskeptic
Instagram: instagram.com/cosmicskeptic
TikTok: @CosmicSkeptic

The Within Reason Podcast: podcasts.apple.com/gb/podcast/within-reason/id1458675168

- CONTACT

Business email: contact@alexoconnor.com

------------------------------------------