Sean Carroll: Many-Worlds Interpretation of Quantum Mechanics

46 thoughts on “Sean Carroll: Many-Worlds Interpretation of Quantum Mechanics”

1. This is a clip from a conversation with Sean Carroll from Nov 2019. Check out Sean's new book on quantum mechanics titled Something Deeply Hidden: https://amzn.to/2C6aCaf New full episodes are released once or twice a week and 1-2 new clips or a new non-podcast video is released on all other days. If you enjoy it, subscribe, comment, and share. You can watch the full conversation here: https://www.youtube.com/watch?v=iNqqOLscOBY
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2. Where is the mathematics to this?

3. The irony of this is that there are so many underlying assumptions being used to explain this 'fundamental' view.

4. The many worlds interpretation of quantum mechanics is totally bananas and no one seems to point that out. Maybe just a little bit of hesitation before postulating an absurdly high number of parallel universes would be a wise thing to do.

5. Conservation of Energy… is Universe, Split-Universe -> Multiverse a close system?

6. Jada Smith also got entangled

7. This guy is an idiot savant … not a scientist. Why? Because we can never test these idiot multi verse, or string theory predictions. All we know for sure … is that the physics that control our universe are different from the physics outside our universe. I think we should drug test all these multiverse clowns. They can't figure out a unifying theory … so they work on one that can never be tested/proved. Perfect!

8. The host was so lost.

9. Love all this, real shame it seems to be men are in the majority when it comes to quantum mechanics. My feeling is, given that women are the ultimate creators in the universe, they needs more of a bigger input. No agenda here, just two bottles of red wine and a keyboard. 🙂 x

10. 6/22/20 @ 7:30cst I had the craziest dejavu. The stock market opened at 8:30cst. At 8:56 I placed a bet. 6/24 SPY Put. After that I watched the SPY one day chart live on my phone. The SPY went to 310.63 and started to turn down. That made sense because I looked at the high of the breakdown candle on the one week chart and it was 310.65. So far so good I thought. Put my phone down and went along w my day. 2 hours later I looked at the one day chart to see how it was doing. The chart was different from what I saw happen live. This was the second time in 3 weeks this happened. On 6/4 the 3 month high on the silver chart was $18.58. A few days later I looked at the silver chart and the 3 month high on the chart was $18.41, which is what it is if you look at it today. Oh yea, I had the craziest dejavu then too. Thx for explaining what I witnessed. Your theory has to be true!

11. Wow

12. The most honest answer you get in this clip is "I don't know!".

13. When in a block of uranium one atom decays, can we say then that all the other atoms decay too but in a different universe?? I ask because it gives an answer to the question why exactly that atom decays and not another. And I also wonder if time can't be seen as you yourself moving "spatially" through parallel universes that are all already there. The question than becomes why a system moves in a certain direction (with more entropy?) Of course it will almost never revert to a state before the branching. The beginning and the end of a universe could be already there all along waiting but there the number of possibilities is so reduced (to 1 at the Big Bang or a frozen infinity) that a living thing can never go there so "far". The MWI suggest too that the brain is not local, part of only universe.

14. So the problem is not in QM or QFT or QED. The problem is that we have only one consciousness and can observe only one of the universes. If we were omniscient, we would be able to observe everything everywhere every time all the time.

15. Anything purported as science with 'Quantum' in the name, is a lie, a hoax, a deliberate attempt to manipulate our Sense of Reality.

16. Maybe I like Sean Carroll but I don't uderstand how someone can believe in such a strange thing like many worlds.
    Some stories are nicer than other. Kopenhagen is nicer than Many Worlds. Many Worlds is like a fairy tale. Kopenhagen is close to the true , but needs explanation how it works. -my intuition based on what I know tells me.

17. We put too much importance on the observer, in such a way that it is creating a new universe every mini second. Just by observing something, we create a whole new universe.
    WOW…
    Don't you think that is too much?

18. Interpretation / What is empty space? It's damn well not empty.

19. The universe was born ageless, outside of the confines of time, just like a fully formed new born baby, and is neither young nor old in that sense. Our notion of time comes from the observation of objects in the cosmos moving towards and away from the LIGHT which is constant. Whether time really exists or not and whether time is motionless or static, if you want, are for God to answer. But we can find in the book of Genesis that God is outside of time from our understanding of time. Already there was darkness, there was the deep (ocean) and the ground under the waters before God even said "Let there be light" and then separated the light from the darkness. The earth was producing vegetation and fruit even before the sun and the stars were set in the heavens. God is in the business of separating things: he separated light from darkness, the waters under the sky from the waters above it, day from night. He also separated the waters of the Reid sea for the children of Israel to cross on dry land and some day he will separate the goats from the sheep. But man messes it up when he separates one thing from the other: marriage separation causes heartaches and our own separation from God cost him a very high price for the blood of his only begotten Son. Some things are given and not proven like in Geometry it is given that opposite angles between two crossed lines are equal which visually, to say the least, makes sense.

20. came up with a scrappy yet coherent version of this therory completeley inedpendently during/after a bad acid trip. was fascinated to find out it actually exists

21. is Sergei from Devs based on Lex Fridman? asking for a friend

22. 13:00 hidden variables was discredited since Bell's theorem

23. So theirs 20milion Donald trump in this universe? HELL NOH

24. Sean Carroll is a great physicist but the many worlds theory lacks a mathematical model to support it so far and I think we should believe only in something for which there is actual evidence !

25. Schrodinger's cat walks into many bars.

26. "Today's scientist have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has NO RELATION to REALITY." _Nikola Tesla
    In other words, it's all imaginitive, its made up. The theory cannot be used in reality because it's not REAL. Out of all these imaginitive ideas I will have to agree with the guy who knew how to grasp the light, the main power source that lights up all universes, and use it in real life applications.

27. the split of world at each observation is totally unnecessary
    consequence of Everett’s relative state. The wave-function of observer is a way
    more economical way then wave-function of
    “entire” universe since observer's observations are the only & only what
    effectively exists and accessible for observer to test, the only observer's
    state is available for observer to test/run any experiments. Thus, it makes no
    sense to talk about wave function of universe since universe is an emergent
    phenomenon derived from observer's states thus “entire universe” is an observer’s
    assumption to comply with observer believe for objectivity of reality. Such
    quantum system as an observer is a way less complex quantum system as entire
    universe. In some extent both can be considered as an approximate invariant.
    "entire universe" version assumes existence of objective reality
    while "observer version" makes no assumption about that at all.

28. No, it's bullshit. Just because we can't understand exactly what going on in those extremely remote and small scales, we shouldn't come up with ridiculous explanations and force ourselves to believe them. Crystal spheres (or whatever) may have explained the movement of the planets, and it may have taken a Very Smart Person to understand the whole theory, but it was still bullshit. We aren't any more intelligent now than when we believed those things.

29. J krishnamurti said so many years ago the observer is the observed. Every time I hear about many worlds theory I think of that. The observer is the observed. Some of the talk between quantum physicist David Bohm and J krishnamurti are so fascinating. Of course krishnamurti was talking psychologically when he said the observer is the observed. But still very interesting.

30. Did the splitting of worlds occur at the moment the big bang?

31. And think . Our consciousness jumps from one reality to another which we call miracles and sudden changes

32. I'd like to ask…
    Do two distinct branches connect again?
    It would be so fun if it's happening.

33. Just by looking at the comment section, i can see that Quantum Mechanics unfortunately attracts a large number of pseudo-science spewing idiots.

34. A movie doesn't 'exist' untill you watch it but it always exists as potential

35. Shut up and calculate! :p

36. Theoretical physics —> Science fiction

37. Sean is such a good explainer. Really demonstrates his understanding

38. as smart as these idiots are, they cannot comprehend that space dilation is possible. Curvature has been proven. Time dilation has been proven. But space dilation OMG I've Lost My Mind!

39. his theory is that the wave function is like god. If that wave function were to change you would never know it. It would change the past and the future, and you would not realize any of it.

40. uhh… that stupid diagram is staring you in the face… it's an ascending ratio that forms a curved line no matter which path the moment takes.
    It's part of a 3D toroidal sphere. Time might pass on a plane or many planes, but they're all part of a 3D dynamic.
    Dumbasses!

41. I thought hidden variable theory was ruled out by a recent experiment? Is that not true?

42. i dont get it…

43. I think I'd rather believe in a conscious universe rather than many worlds theory… Just seems inefficient.

44. Is the following entailed the Everett interpretation? There is a metaverse that contains every possible configuration that this universe could be in. The possible configurations of the universe constantly increases, so this metaverse could be viewed as constantly enlarging.

    If this is what Everett entails: 1. Communicating it this way would be easier for most ppl to understand. 2. This makes the full extent of the prima facie absurdity of the position even clearer.

45. I wonder what empty space would like. If there are no atoms, what is there? Nothing? But what is nothing? Crazy stuff to think about. Better off just thinking the world is flat.

46. The more I learn the more I crave.

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