maybe there's a universe out there where I believe in the Many Worlds interpretation

Now we need a map of the many interpretations of quantum physics.

Massive effort explaining all these interpretations, well done! I’m impressed!

Einstein, Newton and Pascal are playing hide and go seek.lt’s Einstein’s turn to count so he covers his eyes and starts counting to ten.Pascal runs off and hides. Newton draws a one meter by one meter square on the ground in front of Einstein then stands in the middle of it. Einstein reaches ten and uncovers his eyes. He sees Newton immediately and exclaims “Newton! I found you! You’re it!” Newton smiles and says “You didn’t find me, you found a Newton over a square meter. You found Pascal!”

Congratulations! I think this is a brave attempt to explain the main quantum theories, most are known or sound to many of us, interested on the topics. But it's nice to have them all together right there in front of us. I agree with you, there must be some basic things missing on quantum physics, as there are so many theories, and none of them explain most of the evidence. Many thanks and keep going!

You are absolutely the best explainer ever. I'm hooked and can hardly wait for more. Thanks for being so smart

Ha, so the takeaway is "we dont know and we cant agree!" .... Love it. Nice presentation

This is a terrific summary. Thanks for all your hard work!

This is such an amazing summary. Thanks for this work!

This is a fantastic breakdown!!!! I love how understandable you make each interpretation.

This was literally the best explanation of almost every interpretation of Quantum mechanics, to be honest, I'd really like to see you push the boundary and make a more detailed version of it. I'm just saying, it would be really appreciable. In all, it was a great video..... love from India.

Thank you for going over so many interpretations!! There were a few I had never heard of.

"Spooky action at a distance" isn't faster than light unless you can separate the entangled particles faster than light. If you place two pages of a book into two envelopes and seal them.... separate the envelopes light years apart... and open one of the envelopes, you instantly and immediately know which page is in the other envelope. No spooky action.

Loved it! It is really interesting. Keep this kind of good work.

This is amaizing, I cant believe I understood most of it and your prev video as well. I love this

I wish I had a physicist friend that I could talk to for hours and give my opinion on how I think things work, just so they could explain why I’m wrong! 😁

your video quality is so amazingly good.

Thanks for this genuine explanation of all these theories. Keep it up the good work

Wow!. Thanks for your enlightening explanation of what had me stumped for so long. I am so much more clear about it and had no idea that the key to understanding it all could be so simple.

This really got me thinking. Thank you!

"We might be missing something fundamental... to go back to the main principles" couldn't agree more. I 'believe' it would be that too, re-questioning our very assumptions of reality and scientific measurement/analysis :) very informative illustrative video, thank you.

Your videos have the most clear explenations. I (obviously) don't know any of the actual calculations involved (yet), but I sort of "feel" how it works and it's starting to make sense, as much as QM can make sense.

this account is so good. thank you so much for the care you put into it!

I am grateful for your honest approach to this subject - food for thought! Thank you.

Once again, WARM THANKS for your great work. The result is a great overview!! I will now rewatch the video. :-)

That's a great overview that needs to be shown in university! "Shut up and calculate" is quite fitting, as the Copenhagen interpretation is often taught as fact. Some lecturers mention the existence of other interpretations but no one I ever had clearly said what I find the most important thing to know in order to understand quantum mechanics in relation to the rest of physics: The Schroedinger equation was found by guess work and works *surprisingly* well and no one really knows why. But as it works so nicely we just stick to it.

You make fantastic videos. Really well done. Thanks!

Great video. It's amazing to hear about the frontiers of science as well as how scientists are grappling with them. Thank you.

I learned more in 17 minutes than I learned in two recent physics books. Jolly good job!

that's a great work, i would have lost hours & hours trying to gather all these interpretations and comparing them to each other, so really thanks

Short, informative and to the point... great work 👍👍👍

great video! easy to follow. keep up the great work please

Thanks so much for this video - I’m writing an article about this for an assignment and this was helpful as an overview and generally understanding all the interpretations. (love your videos btw)

Thank you for the nice video. Helped me understand a bit about the other interpretations besides the oldest one which is more spread around

Great info, thank you! Also that final brain fart moment was brilliant. Thanks for keeping it in there, as it gave me a good laugh!

Your graphics and presentations are just awesome!! Thank you )))))

Love your videos, very helpful to negotiate the jungle of the quantum world. Please keep it up.

3:32 "shut up & calculate" lol 10:22 Pilot-wave threory/bohmian mechanics 11:24 Alternative Collapse Theory 12:25 Testable prediction [14:15 Transactional interpretation i was soooo waiting for this one, i thought u'd leave this. but glad u covered it. 14:44 *star point:* "This can get around Bell's theorem."

Thanks for the explanation, it was quite understandable 👍

Great resume of a complex subject and enjoyed the biscuit !

As always, the best videos

Forget religion to work as meditation and mental therapy for me, all this "physicist storytelling" is enough to sooth my mind. I take comfort in the fact that we know a lot to come up with the some of the most creative and I guess, "imaginary," (I don't know if that's the correct word for this) interpretations because what we do know, even though it's a lot, isn't comparable at all to what we don't know. It's like a never-ending treasure hunt. If you're curious, then it's the right field of study and work for you. That [brain.exe not working] bit was hilarious, god how I love quantum physics. It's so nutty and insane! Great job with this video!

Awesome summary! I learned some interpretations that I had no clue about. As far as the Born Rule, I don't know if you saw this recent paper, but theoreticians were able to derive the Born rule from some more fundamental assumptions. So that's a bit exciting, I guess?

Wow, this was a perfect summary of what I´ve teached myself the last weaks. THX

Very informative survey. And, I love the dry wit, which is almost imperceptible. Kudos.

the more i learn the less i know

This is very helpful for a project I'm doing for my QM class, thanks!

I've been trying to figure out how many interpretations there are and it took me quite a while to gather Copenhagen Interpretation and Many Worlds Interpretation. So thanks for collecting all of them in one video.

Wow keeping make awesome videos. Luv your channel most from India

Amazing video !!! Keep it up !! One little thing : could you enlarge for next time some of the sketches as you are talking so it will be more easy to read ?

Very good job of making these ideas accessible.... well done.

I believe that two very serious fundamentals are being totally overlooked. 1) Study the properties of thought. There are many of us who are or have been proficient manifestors. There are ways to prove this, or at least provide evidence with the probabilities so high that other interpretations go out the window. Look to the experiments where the Ph level of water was quickly changed (either up or down) by a far greater magnitude than otherwise possible, by simply adding the element of thought-filled "intent". Also consider the basketball experiments that consistently defy exectations that thought are impotent. There are many others., 2) Reconsider the nature of gravity. This takes us back to Bell. When the spin of an entangled photon is changed, the mate INSTANTANEOUSLY changes its spin. That means a "relationship" holds the parts together. That relationship contains the experience of both of its parts AT THE SAME TIME, even if the experiences appear opposite to us, given our frame of observation. Physicists already recognize that the two photons are really one experience, but no one explains how it can be, which is odd given how easy it is to explain. It (the relationship) exists in the unseen. Now consider gravity as entanglement, while remembering that the Big Bang was really the Big Expansion, and it (the singularity) is still expanding. this would mean that gravity is entanglement,. 3) I could teach you to become psychic in only a few minutes. After that, it would take nothing more than some hours of self-awareness for you to become proficient. This will introduce you to a different way of "relating", and it will send you in new directions., 4) Time: Conventional wisdom does influence, thus limit, our ability to think outside of the box. From our frame of physical existence, time cannot go backwards, but in the realm of relationships, they can certainly go back and forth (instantaneously). I have not yet thought of an experiment to prove or even provide physical evidence of this, but I think that if we could get a group of similar thinking heads to work on this, we could easily come up with an experiment because we are all manifestorsl It would have to be an experiment involving groups of humans with a control group. 5) I can think of one theory that combines all of these ideas, but it can't be explained in a small post. Nor can my belief about the nature of the bands of light in the Twin Slit experiment be tested. I believe they point to different times, but you obliquely addressed this. Though given the power of human thought, is it possible for a group of trained manifestors to change the patterns in the twin slit experiment?

Good work man, thanks.

U know what's funny? a video game helped me understand your video and get over a "mental block" that i had. The idea of measuring a wave but only seeing a particle in one point, but that could be somewhere else at the same time was hard to grasp for me. But then i remembered the game Outer Wilds where there's quantum objects and u have to "solve" this issue when dealing with those objects (i won't say more about the game because the less u know about it the better it is...y'all should play it, it's really good). all of it is fascinating, thanks for putting it in simpler words man!

Very good! I've been trying to understand modern physics for years; I've read books, watched videos, etc. This video finally got through to me: Physicists don't understand what's happening! As a lay person, I just want to know the mechanics of the World; not all the theories that may or may not be right. I'd rather leave those theories to physicists.

Loved it! Thank you very much

Hat off to you, sir. Impressive work.

100% we're missing some crucial information but I am hopeful we'll keep advancing. Great explanation on the subject !

Thanks, this was really clear!

im literally taking physics as a career and ima freshman and your videos help clear a lot of what i thought i knew

Thank you so much sir 😊 for your great effort

amazing, best explanation

This is an excellent video! Thank you :)

I really like this video. Thank you

Local Hidden-variables Theory makes two assumptions: Interactions between particles are local and Individual particles have determinate properties Bohr in his Complementarity Framework (later developed and refined by Karen Barad into the Indeterminacy Principle) provided an alternative account which proposes that the particles become ontologically entangled with the measuring apparatus. In this interpretation, measurement itself creates and further extend entanglements (since measurement produces correlations between apparatus and particle). It would be interesting if you could read Barad's Agential Realist account of the Uncertainty Principle and how she dismantles it in order to propose Indeterminacy Principle for interpreting the "uncertainty" of the object being measured.

One important thing you could have mentioned is that the Born Rule arises naturally in the Transactional Interpretation (TI). This is because the TI doesn't discard time-symmetric solutions of the wave equation. The Born Rule needs these - they're the complex conjugates in p=X*X. The TI gives clear and simple meaning to why this works.

5:35 even though I don’t believe in the many worlds interpretation, this still really helped me out just by reminding me that I can make choices to make me happy. Thank you

Fantastic explanation of a very complex thelry

I can listen to you all day! 😍

This channel is sooooo underrated

Love this !!

Always loved Bohmian mechanics/Pilot-wave theory

bro you’re videos are so much easier to understand thank you lmao

Cosmological & Alternative collapse interpretations are the ones that seem most reasonable to me. Plus it aligns with the correspondence principle.

Amazing video!

Thanks for this nice summary of the important interpretations of QM. Just one correction: David Bohm's 1952 interpretation actually is testable and has been tested. He described that the Schrödinger equation actually represents the geometry of the experiment (I'm using the double-slit experiment as a model here), and can be thought of as potential lines of force that guide individual electrons or photons from the slit they pass through to the screen. Recall that mechanics of the very tiny cannot be expected to be the same as Newtonian mechanics, but it must yield Newtonian mechanics in large ensembles of particles. The basic difference is that particles are guided by the Schrödinger equation. This is testable, because by experiment we can observe the effect of these lines of force on individual particles as they travel through deterministic paths from a slit to the screen. We can in effect position the screen closer to the slit and build up the lines of force to see if they comply with the force predicted by the Schrödinger equation. Not only that, but this use of the Schrödinger equation as a pseudoforce also explains the enormous difference in pattern that happens when "the other" slit is closed, since the Schrödinger equation reflects the geometry of the entire experiment. At least two experiments reveal that this new "quantum force" works to predict the paths of the particles and to give rise to the probability distribution evident at the screen. It confirms that what is missing from the Copenhagen Interpretation is simply the initial positions of the particles within the slit. These are the "hidden variables" and they are not so much as hidden as consistently ignored by Bohr and his followers, for the simple reason that these initial positions could not then be measured by the equipment they had available. One simple outcome is that particles that pass through one slit always stay on that half of the pattern at the screen. This is not what waves would do; they would spread out spherically from each slit to cover the entire screen with particle detections.

4:19 LOL! That face says it all!

First off awesome informational video! Explaining such complicated interpretations succinctly is a superb effort, thanks. On that fundamental missing component, could it be gravity? From what I understand, and I admittedly understand very little about QM, isn't gravity left out of the conventional model right now?

On the meaning of probability in Many Worlds, I think there's a straightforward answer. If your particle is predicted by QM to have a 30% chance of state A and a 70% chance of state B, then 30% of the futures will realize state A. The 100% chance of state A that you mentioned exists in those 30% of futures, but only far enough into each future that the observation has occurred. In other words, the probability depends upon your location within the "many worlds," and in particular it of course changes with time (before the quantum coin flip, the system had state with some uncertainty, afterward it had a known state). This may be the idea that QBism formalizes--I hadn't heard of it until this video.

Please make a video about Decoherence. Love your work. Thank you.

So much efforts...awesome...like it...want some more lectures. .u r awesome sir...

Powerful leader thank you

Quantum Mechanics makes good logic from a programming point of view... Thanks for very good presentations in an objective way! Good answer about your (non)favorite interpretation.

Do more of these!

The many worlds interpretation doesnt break probability, its what happens when you take probability literally When we say a dice has 1/6 chance of outputing each value because the output can take 6 different values and there is some sort of simmetry between them, that means all of them are equally likely The measurement of a wave function has a random output, so we can view it the same way: there is a possibility space, the output is a random point in this space and something having 70% chance of happening means it takes up 70% of this space(in your example 70% of the worlds would have one outcome and 30% the other) The problem is that if you consider a measurement from the point of view of a scientist that knows the result and from the point of view of one that doesnt their wave functions will be different. From the point of view of the one that doenst it is a superposition of the many measurements that could have happened, with the scientist that knows entangled with the result. From the point of view of the one that knows the wave function collapsed to only one state Then, if you interpret one of those states in the first wave function as the reality the second scientist is living, since there is no difference between this state and the others on the wave function the natural conclusion is all the others represent other worlds You could just say that actually only one of them is a real world, we just dont know which one, like we do in the dice case. The problem is it doesnt work, because quantum physics is weird and sometimes one world interferes in the other

Awesome, thanks!

@Domain of Science Nice video. But one thing that I wonder is what is your opinion on the relatively new ER = EPR interpretation (theory)?

Brilliant!

not a physicist but these videos are so clear, I feel like I'm learning! What editing program do you use for your videos?

I love the music!! It's very pleasant

Great job

quality content!

When I watch your videos I’m getting “bathed”with quality, precision and understanding, you’re awesome! 🙂

More than the intellectual knowledge, congratulations on your "productive humility", a feature so important for 21st century's scientists :)

Sé que es complicado pero siempre vale el esfuerzo. Gracias.

Non-local Hidden Variable Theory is my personal favorite because it preserve predictability and gets around the wave function breakdown. If there is a underlying wave that the particle travels on like a ball in the ocean, then any snapshot of the particle will be in one place. But we can't know the wavelength of the underlying wave because we need multiple snap shot like a video recording. Which then means the particle is in multiple positions. So the uncertainty principle is explained. The apparent probability is created by how often the particle is in any singular location. As a laymen, it just makes sense to me and I like the deterministic nature. So it's mostly from a biased perspective but there's no evidence for any of these theories anyways so it doesn't matter much does it

very interesting , thanks

Instead of presenting hypotheses that can never be tested, I much prefer the quote from Feynman, "Just Shut Up and Calculate". However, the link between the collapse of the wave function and the observation by a conscious being is intriguing; this invokes a lot of questions about the apparently impossible task of understanding the physics of consciousness. Maybe a review of Wheeler's Delayed Choice Experiment that shows a present result has been fixed in the past by a present action may be enlightening to some.

15:55 Oh, I love this moment, kkkkk~ It seems that quantum rabbit hole is entangled in physicist's brain-melting. Thx for your best effort. XD

I agree that the best way is to go back to first principles or even the first principle: "I think therefore I am". Now we're are on solid ground.