Many-worlds: Infinite number of parallel universes | Sean Carroll and Lex Fridman

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GUEST BIO:
Sean Carroll is a theoretical physicist, author, and host of Mindscape podcast.

PODCAST INFO:

SOCIAL:

[LexClips]

Guest bio: Sean Carroll is a theoretical physicist, author, and host of Mindscape podcast.

[jayare]

I was a student at U of M Ann Arbor in 1964 and had Forrest Everett as an instructor in Engineering Mechanics. He had a small cubbty hole office unde the stairs
at the end of the 3rd floor of East Engineering. At this time the Many Worlds Interpretation was only the stuff of late night speculation. The author himself had a certain mystery
surrounding him. Forrest was Hugh's brother and had the now familiar picture of him over his desk. Before one 8 AM class I saw Edward Teller duck into the empty office to view
the picture. An incredible moment..

[andrewstrakele]

“These worlds don’t exist in space. Space exists in them.” This is how one would describe Virtual Realities. 🙀

[cloudysunset]

Lex's dry questioning and quizzical facial expressions complementing Sean's wonderful baritone voice while sharing their amazing knowledge with a gift. thank you.

[rikib.]

There is an infinite number of universes but only ONE OBSERVER !

[deanodebo]

They cannot explain how or why a particular probability actually happens rather than the alternative - so they explain it away by just having infinite universes. That’s a heavy cost

[masteronionnorth]

Trying to comprehend this discussion involving quantum mechanics, time travel, Schroedinger, parrellel worlds, reminded me of when I tried to grasp what happened in Dark on Netflix, which also involved similar themes.

My poor brain could not cope... 😔

[jatag]

Your interviews with scientists are so interesting. Thank you

[BillGoreArt]

"Existence is not a problem to be solved, but a reality to be experienced."
~ Somebody.

[alexrush]

Long story short from this entire podcast; we don't know wtf is happening

[tonybaloney]

Every time I think Sean has explained something real well, Lex throws out a question that I have that makes Sean half explain and then I'm left wondering the same thing when I started the video... Still, I can't get enough of these discussions.

[windowman]

Thank you Seán, could listen to you all day, greetings from Ireland 🇮🇪.
Thanks Lex..

[clark]

I heard this entire podcast before and just was hearing this part again, but at 5:18 I started to say "whoa whoa whoa." To prove this idea, wouldn't you simply have to have two people observing the same trajectory to outcome, yet they both end up seeing something different from the other...? If not, shouldn't there be conditions where this could be made possible? And if not, why not?

[AfsanaAmerica]

I think everything comes from us human beings as in we don't own the universe but we created our world in the universe. We created ourselves and we are a product of our experiences, environment, education, technology, innovation, civilization etc. and we are studying ourself as in the outcomes of history. It could've been different tbh with different rule sets and fine tuning but we survived and thrived under these conditions. If we adapted and evolved into different creatures then we would've had a completely different world with different laws of physics, for example underwater creatures. In many worlds interpretation it's possible that humans and other creatures coexist but we live in the human world and that's why we don't see them. I think the universe is as infinite as we are and goes as far as human civilization does therefore it's possible that we have existed much longer than we know hence the big bang/before the big bang. The universe is 13.8 billion years old and Earth is at 4.5 billion years old and looking back is like looking down from that height and that's why extremely tiny. But if we have the technology then we can see the past and future.
Great discussions with Sean Carroll, Lex clips.

[markoates]

Ok so as I understand it. Everything exists, all at once, as a simultaneous static thing. The "perceiver", or "exister" or whatever is actually space, which traverses the block from point to like a playhead on a record... for some reason.

What I'm curious about is how are we able to "reach into" this uncertainty thing with our little wiggly probey science fingers and detect that multiple possibilities exist when we are confined in collapsed spaces exclusively?

[wvutrip]

Feel like bingo in the bluey episode where parents explaining stuff just sounds like gibberish.

[john]

Scientists either use the magic of time or the magic of infinite possibilities to explain the miracle of human existence and the existence of the universe.

[aliwaqas]

Lex always surprises me with his intelligent questions being not a physicst. He always has that enough intelligence to dig out real information out of his guests.

[wcl]

Maybe a way to phrase the question of what is outside the universe is what is the universe expanding into

[masonb]

If the simulation that we are in was run on a quantum computer then it only makes sense that there are many worlds.