Well. I must say that reality shifting is definitely one of my pet peeves just because of how absurd it is, in terms of multiple perspectives. To whoever reads this who believes in reality shifting, please note that the following rant is my opinion- you are free to think whatever you want, but please note that I will not mince my words whatsoever. To me, the very concept of it is so absurd I'm surprised it's even a trend in the first place.

To that one person who hasn't heard of reality shifting, allow me to explain it in the shortest of ways: you create a script, which basically cements an entire universe's existence through a theory known popularly as Schrodinger's cat, and then you let your consciousness travel to it and take over you in another universe, while leaving behind a mental alter to do your duties while you go and have fun in whatever universe you're in. This is the basic premise of it, and here I will give my opinion on it: IT SUCKS.

Reason #1: Schrodinger's cat is being used incorrectly

Please allow me, if you will, to first investigate Schrodinger's cat. Since it's a proven theory for quantum physics, it could surely be the explanation for a multiverse, correct?

Wrong. Schrodinger's cat only - ONLY - accounts for elementary particles on the smallest of levels, such as electrons and quarks. Schrodinger's cat is being used incorrectly here because the theory is about observing said elementary particles through photons hitting them. Let me provide an example:

Suppose that you replace the cat with a single qubit - a byte of data that can be simultaneously one and zero at the same time. While it is unobserved - which this case means that it has not been passed through a filter and therefore has two separate wavelengths - the qubit is simultaneously a data bit of one and zero at the same time because of superposition. However, once you observe the qubit by letting the qubit pass through a filter, it either becomes a 'one' or a 'zero'.

Other examples are electrons, surprisingly. Because they're so small, they move really, really fast; so fast in fact that there's an entire principle about them (The Uncertainty Principle). However, since they're so small and fast they can follow the Schrodinger's Cat law - they're either there or they're not.

What's not an example of Schrodinger's cat theory, however, is the concept of the multiverse. Again, Schrodinger's law isn't even a part of any scientific theory. According to https://wtamu.edu/, "Schrodinger's Cat was simply a teaching tool that Schrodinger used to illustrate how some people were misinterpreting quantum theory. Schrodinger constructed his imaginary experiment with the cat to demonstrate that simple misinterpretations of quantum theory can lead to absurd results which do not match the real world."

Checkmate.

Reason #2: Just going to another universe with your consciousness breaks multiple laws of physics, quantum or otherwise

To put it shortly, currently, we have no possible way of leaving our solar system en masse, let alone an entire universe. Now, I can hear some people say that the universe is infinite and multiple possibilities can happen within the same universe. To that I say... we don't know yet, but most likely not.

Alright, let me put it like this: suppose, if you will, that the Star Wars universe exists in a separate place than us, while in the same universe. Badda Bing, Badda Boom, suddenly you've got a Star Wars galaxy. Normally enough, that wouldn't be cause for concern. However, let's say that you made it so that Earth - this Earth, right now - was in the Star Wars galaxy.

You can see the problem here. Theoretically speaking, if all supposed rules according to an 'infinite universe' are true regarding reality shifting, right this second the Death Star would show up through hyperspace and blow us up (and seeing the state of Earth right now, I'd say good riddance).

Anyway! Back to my main reasoning here. Let's outline just how many laws of physics reality shifting breaks, shall we?

Law of Universal Gravitation - this law states that gravity everywhere pulls on us, no matter where it comes from. However, if the concept of an infinite universe is correct, then there is an extreme chance that we wouldn't be able to exist. This is because gravity - lots of it - would increase exponentially with each and every new thing we think of, therefore most likely ripping us apart - or even worse, causing us to not even exist in the first place. There was already an infinite amount of possibilities that happened since the start of the universe to the very first cell - which brings up a question, would an infinite amount of big bangs create an infinite universe? And if so, what about religious ideals? If an atheist and a Christian decided to make a world with or without a God, what would happen?

The First Law of Motion - this law states that "An object will remain at rest or in a uniform state of motion unless that state is changed by an external force." This means that an object will not change unless something else acts upon it through energy. In reality-shifting's case, writing a script would not act as an external force that changes an entire universe or place. You'd need immensely more energy to achieve this, which would increase the more detail you'd put into it.

The Third Law of Motion - states that "for every action in nature there is an equal and opposite reaction." This follows through with the Law of Universal Gravitation in this case. Again, infinite gravity (from an infinite amount of thoughts creating an infinite amount of realities within an infinite universe) would pull upon us. However, where in the world would we gather enough energy to overcome that gravitational pull? If a planet pulls on us through gravity, then we would pull on it with our gravity. The problem is that - again - you're introducing an infinite amount of gravity.

The Second Law of Thermodynamics - this "[...]relates to the natural flow of heat within a closed system". In other words, this law dictates how heat moves around in any part of space - from a box to an entire universe. There are a few problems with it when it comes to - y'know - reality shifting. Such as - and bear with me here - the fact that any moment I could write a script to a universe that had an infinite amount of heat that could randomly open an infinite amount of portals to an infinite amount of universes. This is not a closed system.

The Third Law of Thermodynamics - "[...]states that it is impossible to create a that is perfectly efficient". Simple counter: create a universe that has perpetual machines.

And that's it! Now, I hear some of you in the back - yes, I mean you, Trevor - say that some of these laws aren't necessary for a separate reality to be formed, and to that I say wrong. These laws were essential at the beginning of our universe with all the heat, elementary particles, and quantum particles running around to create who we are.

Oh, and one more thing - quantum physics are laws of physics that extend to the quantum realm - aka really, really small stuff where weird stuff starts to happen. However, even if it somehow discredits all the laws I have listed above - which it doesn't - it cannot and will not break the Laws of Thermodynamics.

Reason #3: Generally speaking, it sounds too good to be true

Alright, I'm going to have to be honest with you - I want reality shifting to be possible. I want to slip into another world - another reality! - where I can do anything I want. I want to go to Hogwarts and learn magic! I want to fly around on a Charizard in the Pokemon universe! Our life just seems so astonishingly bland, yet there's possibly an infinite amount of choices we could conceive of, right?

Unfortunately, that's why reality shifting can never be a thing for two reasons - it just sounds too good to be true, and it means that we'll give up on our roots.

What I mean by saying that it's too good to be true is that fundamentally speaking, it's impossible. I want to say so hard that it's possible and everyone can do it, but... no. Our laws of physics apply to absolutely everything. I can't go to Hogwarts and learn magic because magic wouldn't exist - I'll delve into that can of worms in another chapter - at least in the way that Harry Potter perceives it. It's just a dream that seems so far away, innit?

My other reasoning - that we'd be abandoning our universe - is something that can be spoken by itself. However much we hate it, we can't give up on our universe. Other, better universes might seem like paradise compared to right now, but we'd be letting our Earth go to waste. And we simply just can't do that.

Sources:

https://wtamu.edu/~cbaird/sq/2013/07/30/what-did-schrodingers-cat-experiment-prove/

https://www.thoughtco.com/major-laws-of-physics-2699071

https://en.wikipedia.org/wiki/Poincar%C3%A9_recurrence_theorem

P.S.: If you reality shift or know someone who does and sees something that seems wrong, please DM me the information or comment on this thread and I will try to fix the mistake, given that I don't have a refute for it.

Thank you for your time, and I'll see you in the next chapter.