Sean Carroll: Quantum Mechanics and the Many-Worlds Interpretation | Lex Fridman Podcast #47

I really enjoyed this conversation with Sean. Here's the outline: 0:00 - Introduction 1:23 - Capacity of human mind to understand physics 10:49 - Perception vs reality 12:29 - Conservation of momentum 17:20 - Difference between math and physics 20:10 - Why is our world so compressable 22:53 - What would Newton think of quantum mechanics 25:44 - What is quantum mechanics? 27:54 - What is an atom? 30:34 - What is the wave function? 32:30 - What is quantum entanglement? 35:19 - What is Hilbert space? 37:32 - What is entropy? 39:31 - Infinity 42:43 - Many-worlds interpretation of quantum mechanics 1:01:13 - Quantum gravity and the emergence of spacetime 1:08:34 - Our branch of reality in many-worlds interpretation 1:10:40 - Time travel 1:12:54 - Arrow of time 1:16:18 - What is fundamental in physics 1:16:58 - Quantum computers 1:17:42 - Experimental validation of many-worlds and emergent spacetime 1:19:53 - Quantum mechanics and the human mind 1:21:51 - Mindscape podcast

Imagine a grandmother living in isolation of Andalusian hills loves nothing better than listening to your podcasts.!

I barely graduated high-school but I've been fascinated and following Sean Carroll for over a decade. Our school system is broken.

This podcast is an absolute game changer for education. Casual yet informationally dense conversations with people who can nonchalantly drop high Qs for those of us with low Q's. Honestly, appreciate this archive Mr. Fridman. It's reminiscent of the 19th century literature that had a wonderful focus on comprehensibility versus crippling esoteric jargon of most journals I read today. Спасибо большое Лекс

I like to think that when the world goes to bed, Lex just sits in his darkened room. At 6am a light comes on and the camera starts rolling

I am slowly gaining a deeper appreciation for the world around me thanks to these recordings.

5:25 Sean’s “you dare oppose me mortal” look when Lex begins to ask a follow up question.

I have never heard it so clearly expressed. “We have discovered science is not organized around our intuitive structures of meaning, purposes and goals...., just patterns of what is.”

Lex is brain scanning all his guests and funneling the genius into the ai he's brewing.

@40:19 "I don't want my level of comfort to affect what I think about the world." Sean Carroll The Statement of 2019.

The conversation is almost always different when a high level theoretical physicist is on the show, they really elucidate answers to difficult questions the versus other guests of different disciplines. Shaun is an awesome thinker.

I haven’t even watched this yet, but anything with Sean Carroll is worth my time. Thanks for the upload! Glad you were able to get him back in, after the tragic way your other interview with him was cut short.

I love what you're doing Lex. This podcast is what I've been waiting for my whole life. Finally, a person that can get smart people on to talk about super smart shit that's 80% over my head but 1,000% better than 99.99% of the podcasts out there.

Bob Ross will make you put aside everything you question and/or "hate" about reality, and just enjoy the fact that we're all here, and that colors and canvas exist. That's a rare quality that a tiny, tiny percentage of some 7.8 billion people possess. I'd put your interviews among the same rare, enjoyable skills, Lex. Your content has helped me through the worst few years of my escalating mental health issues, and I'm forever grateful. I understand the odds of you seeing this are as tiny as our place in the cosmos, but that's okay...I thank you with the exact same gratefulness and enthusiasm.

It's nice listening someone speak on something I'm extremely ignorant about. I have no reason/time to get upset or disagree because I'm just trying to understand what you're saying. Awesome conversation.

"What would an answer look like?" at 20:25 is an excellent question. Your interview skills just keep getting better and better. Kudos!

41:15 brought this quote to mind: “One is so much more than none than two could ever be to one.” -Tim Kinsella

Im going back to school to pursue my dream as a particle/theoretical physicist. I have a model I want to work on and need the credentials for anyone to take me seriously. I have a thesis that explains gravity and dark energy to a fine point and everything else just falls into place so elegantly. Its much more simple than you might think. Im just so excited about the Universe and all the mysteries of the Universe. I cant wait to go back to school and finally get to a place I belong. Thanks Lex Fridman, Thanks Sean Carroll. Thank you to so many others who have all been a positive influence in my life and helped me reignite that spark of wonder thats always been here inside my soul. Peace.

It isn’t often that I watch the same episode more than once, especially long format discussions, but this is definitely one of them. 👍🏼

I started this video without watching part 1. I thought ' who is this guy I've never seen and how did he get Sean Carroll to sit and talk for so long?'. Now I'm subscribed and getting Sean's new book. Sean is so good at explaining the most complex concepts, even describing limitations of language where applicable. He really understands and communicates his understanding. Like how people describe Feynman