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WaveCore t1_jbm1sbs wrote

I think the first thing to accept is that we're 3-dimensionally bound beings, and we're still trying to figure out how to grasp the 4th dimension.

Best way to explain why 4D is tricky to grasp, is by going down a level in the comparison: pretend we're 2D beings trying to understand 3D.

If we're 2D beings, then that means we can perceive height and width, but not depth. That means you would be unable to see a sphere, but you would be able to see each 2D circle of it, if you were to slice the sphere into tiny cross sections.

Picture a sphere resting on a piece of paper. The flat circle it imprints on the paper would just be a dot. As you lower the sphere through the paper, the circle it leaves on the paper keeps getting bigger until you reach the middle of the sphere. At which point it will go back to being smaller again as you continue to lower it, eventually ending up back at the dot.

So while you can never actually see the entire sphere all at once for yourself, you would theoretically be able to infer the true nature of the sphere by stacking all these circles on top of each other. However the problem here is that you wouldn't even understand the concept of stacking the circles. The only thing you can perceive for yourself, is the 2D circle increasing and decreasing. It's difficult to try to imagine the sphere, when you've never seen a 3D object.

And it's even worse if a 1D being tries to grasp the sphere. They would only see a dot that grows into a line, which then shrinks back into the dot. To infer that you're looking at a sphere, you would have to take note of the fact that the line expands at a higher rate initially, only to eventually slow down in its growth until it stops. And actually, you don't have enough information available to you to actually conclude that it's a sphere. It could be a cylinder or cone lying on its side with the circle facing you, you'll never know.

So yeah, sorry if this seemed off-topic, but I just think the first thing to wrap your head around when trying to understand quantum physics is that our natural senses are limited. Things aren't supposed to make sense or feel intuitive, when you're punching a dimension above you.

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WrongdoerOk6812 t1_jbm4ium wrote

I already had a pretty good grasp of a 4th spatial dimension, not the mathematics behind it, but how to imagine it or how we might perceive certain actions from our 3D point of view. Gave me a lot of new ideas about the universe, especially black holes. However, it didn't help me in trying to grasp quantum physics, but I imagine this could possibly use even more extra dimensions.

Anyway, I understand the point you wanted to make. And now we're really starting to lose track of the topic 😅

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WaveCore t1_jbm6eo2 wrote

I would probably start from the classic Schrodinger's Cat example. Let me introduce time into the scenario, say the cat has a 50% chance of dying in the box after 10 seconds have passed. Per your common sense, you would think that after 10 seconds, there will have been an outcome, the cat is either alive or dead.

But here's the weird part, there actually won't be an outcome after 10 seconds, unless you actually open the box to observe an outcome. 20 seconds can have passed, and the cat is actually still either alive or dead. And it will continue to be in this limbo until it's actually observed. It's weird right? You would think that simply observing is a passive action on your part that shouldn't affect or influence any outcomes.

So one theory to explain this is that reality branches into two different timelines, one where the cat dies and one where it doesn't. And this may very well relate to the concept of the 4th dimension.

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Uncivilized_Elk t1_jbnf6sd wrote

Schrodinger's thought experiment makes the point that a cat being simultaneously dead/alive is stupid and therefore there's aspects of physics involved that are not being understood.

Pop culture media constantly misrepresents this and frames it as if Schrodinger literally thought the cat is in a limbo state when the dude was saying such a thing is ridiculous.

It's one of my biggest pet peeves because Schrodinger basically was going "if we use your logic, look at this stupid cat in a box shit that we would get," and yet now people think Schrodinger held the very view that he was calling out as dumb.

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WrongdoerOk6812 t1_jbmfiqy wrote

That last part helped me get an idea about the connection between these 2 concepts. And to bring this back to the original topic of free will brings a lot of extra questions to think about. Like if we are our own observers constantly deciding freely in which timeline we continue to exist, and if this would count for both the sum of our parts and consciousness, or only for te latter. And so on... 🤕

This gave me a lot to think about for a while 😅

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WaveCore t1_jbmnoq7 wrote

Read about the Young/Double Slit experiment. The whole reason why the Schrodingers Cat thought experiment and quantum mechanics came up in the first place was because they were able to cheat the observing condition, in other words they managed to "observe" something without that something knowing it was observed. It also demonstrates the concept of superposition, or having all the possibilities exist at the same time and even interfering and interacting with each other.

Really makes you think about what it exactly means for something to be observed and for all those possibilities to resolve themselves to one outcome. Or if we're the ones that simply branch off to another timeline that represents one of the outcomes.

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