Why Do Physicists Believe That a Shadow Hides Entire Worlds?

Shadow atoms: Shatoms Shadow particles: Sharticles

Photons be like: “Oh, you want to measure me? Now I’m not doing it.”

I'm way too stupid to be here.

Didn’t Einstein say something like? “There are only 2 people in the world that understand quantum mechanics, and I am not one of them.”

this is more interesting and awesome than any magic I have ever seen in fiction

Stolen from russian channel "ALI", word by word

It's my opinion that superposition has to do with access to information. To ask the question "Which slit did the photon go through?" without actually looking, or using some other means to detect which slit, is a nonsensical question. However, the universe is forced to answer nonsensical questions, due to the unavoidable physicality of the universe (i.e., the photon is definitely there even if we're not looking), and the way it does that is by giving us a seemingly random answer, or an answer the encompasses all possibilities of the given system. When you ask the universe "Which slit did the photon go through?", and you have no right to know which slit it went through because you weren't "looking", the universe replies with "All of them." Or, to put it another way, impossible things cannot happen, and one method the universe uses to guarantee this, is to not allow you to have access to information you wouldn't otherwise have access to.

31:59 Oh no no no no !...this little conundrum has already been fully explained, there is no "backwards in time travel of information going on here at all, all it is, is that when the photons are "split" they already have complimentary quantum states, there's no "spooky action at a distance" it's just a misunderstanding...

The problem with the many worlds interpretation is that it doesn’t really solve anything. Copenhagen interpretation has the wave function ‘collapse’ when a ‘measurement’ is made, failing to explain what a measurement is. Many worlds doesn’t answer the question of measurement either. Quantum mechanics lack ‘irreversible’ processes so switching from the Copenhagen interpretation where measurement is the magic handwave to splitting of universes when irreversible processes act is just replacing a small cop out with a huge one.

The gift and the peril of logic is that it can be used to arrive at any conclusion we like. That's why we can craft digital circuits with billions of transistors to accomplish whatever we want.

Are these shadow particles in the room with us right now?

I was with you right up until you said "Imagine an infinite, absolutely sterile room in all directions".

Particle physicist here. Technically, photon-photon interactions are possible, but it’s not a “tree level” process

Really hate AI voice overs. Just get someone to read the script. Is it that hard to do?

We live in a simulation, so the code is just doing its random wave thing in the background. When one of our programs (us) wants to interact with it, it has to start processing different rules.. it's no longer random. We're observing the artifacts of living in a simulation.

You got me hooked, going through the back catalog now and will report back my findings.

Maybe when you die, you just slip over to another universe and continue on. Either taking a different decision that lets you live longer or avoiding that thing that caused death. But only by you the observer. Because you’ve never observed yourself being dead you have zero experience with being dead and scientifically speaking there’s no proof you have ever been dead or not alive. In your own mind, you only have the experience of being alive to judge the future with.

Everett’s “Many Worlds” interpretation of quantum mechanics does not describe a “multiverse” or a “multitude of parallel universes”. There is no interaction between the worlds in Many Worlds.

Great video, always wondered if there was more to the double split experiment and if we'd factored all possibilities before opening to door to other worlds, which after this video seems very possible! PS. For future videos, if you increase your voice volume by 1.3x it should match the average volume across YT!

I think the double slit reveals something so simple it's undebatable: the final landing point of an unmeasured particle is affected by all the other virtual/shadow/parallel particles making up the split waves. The multiverse exerts effects on each other. It's more than causality and determinism. That's just mind-blowing. One thing also amazing: if we don't know something's past, then its current state is one of the possible states in the multiverse. If we know a parameter of its past, then its current state is derived from that parameter.