The Equation That Changed How Physicists Think About Reality | Juan Maldacena

*Maldacena's claim that wormholes and entanglement are literally the same phenomenon — ER equals EPR — is the single sentence that made me rethink what spacetime is built out of.* 📬 Full transcript, bonus content, and my Monday M.A.G.I.C. Message → briankeating.com/yt The 3 moments I would re-watch: ▸ 11:00 — General relativity says lost. Quantum mechanics says preserved. ▸ 12:25 — The problem he wants to solve more than black holes ▸ 31:35 — Why a real wormhole would have to be Earth-sized Question for you: which problem do YOU think Einstein would most want solved if he came back today — the Big Bang, the black hole information paradox, or quantum gravity itself?

Fantastic interview! Thank you, Dr. Brian Keating. I had the privilege of meeting Juan Maldacena at a science symposium in Amsterdam seven or eight years ago. Afterwards, I asked him a question, and he explained it with real passion and from the heart. A great person. I wish everyone could have such a teacher! His field of interest is also the one I personally find the most fascinating.

Thank you for this interview. I totally enjoyed listening to you and Dr. Maldacena. So brilliant, yet so humble. Good stuff Dr. Keating.

12:00 A crucial but often overlooked point is that information has no intrinsic meaning without an observer -- a physical system capable of perceiving, processing, and interpreting it through its interaction with the environment. The core tension between GR and QM lies precisely here: GR treats the observer as an arbitrary, structureless point along a worldline, while QM places the observer and measuring apparatus outside the quantum system, treating them as classical entities with no dynamical description of their own evolution or interaction within the universe. Neither theory accounts for the observer as an embedded, evolving component of physical reality engaged in information processing -- a fundamental gap that must be resolved for any consistent theory of quantum gravity.

Extraordinaire Thank you

Tremendous talk congrats 👏

Wisdom is more important than knowledge; without it, we could blow ourselves up.

The beauty of complex numbers is it describes nature in the frequency domain and this is much different than just time domain. Einstein father was an electrical engineer and I imagine he probably informed Einstein about this. Complex numbers are also expressed in trigonometric functions. It is unfortunate the inventors of complex numbers used the word imaginary because they are so fundamental to nature and add an extra dimension to our numbering system.

@ 34:20 Einstein's "God" is Spinoza and his book "Ethics" is very interesting, I read it and I think there is some "wisdom" in there in terms of geometry and the affects. He has other books I have yet to read but I think Einstein got the idea of how imagination being more powerful than knowledge from Spinoza's book on Ethics. I also see that book as a great book to translate between the terms of religion, particularly God, and science.

"Juan Maldacena says gravity isn't a fundamental force — it emerges from quantum entanglement. If he's right, spacetime itself is built out of quantum information, and Einstein missed it in 1935." "If (s)he's right..."- the most cited phrase in physics of the last 100 years! Who'll be next week's candidate?