r/QuantumImmortality

I'm convinced I died in 2023. And I just found out. [TW: Self-harm]

It is 4 AM my local time, and despite never having written anything on Reddit in my life, I feel compelled to write this. If you're reading this, I appreciate you being here.

It was the spring of 2023. I had just graduated from university and landed myself a comfy job. All of that changed because of a heartbreak.

By May, I had been battling intense clinical depression. I had lost my appetite and shed several pounds. I couldn't sleep without the TV on, and I couldn't bring myself to eat, focus on anything, or work at all.

The details are a little fuzzy now, but a few hours after my graduation ceremony, I went to the top floor of my building, around 4 or 5 stories high, deciding to end my life. I sat on the stairway at the top floor for what felt like hours...

And then suddenly, something flicked.

I took the elevator back down to the ground floor where I lived. I went to see the best psychiatrist money could afford, and my life more or less turned around that very year. Not long after, I got together with the love of my life, someone I had known since university.

The medications worked. And

It has been three years since that incident.

Today, while working, I suddenly had a vision after looking at a picture of a specific street, the very street I would've had a view of if I had jumped from that building. Conveniently enough, I was listening to the same song I had been listening to before I decided to jump.

Everything looks and feels the same, except for little things.

Food I used to love tastes unfamiliar now. Movies that once made me cry do nothing to me. Jokes I would've laughed at three years ago feel like they belong to somebody else. Sometimes I hear myself speak and catch a reaction that doesn't feel entirely natural, like I'm following a personality from memory instead of instinct.

Most days I can ignore it.

My partner can't.

Every so often they stop and stare at me for a second too long, usually after I say or do something small, and ask why I've changed so much since that year. They tell me I still look the same, sound the same, smile the same.

But that something about me feels slightly wrong now.

Like whoever walked back into that apartment that night came back almost perfectly copied.

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u/Southern-Play-4361 — 1 day ago

​The Cosmological Hypothesis ​A Model of Multi-Dimensional Consciousness Continuity

​The Cosmological Hypothesis

​A Model of Multi-Dimensional Consciousness Continuity

This hypothesis proposes that reality is an infinite, information-based multi-dimensional system. Rather than being tied to a single physical body, human consciousness operates like an advanced algorithmic software managed by a higher-dimensional self.

Part 1: The Core Mechanics (Subjective Immortality)

​The foundational premise relies on a completely infinite universe or multiverse. In an infinite space, every possible variation of your life exists simultaneously across parallel tracks of reality.

  1. Consciousness as "Predictive Text"

When your physical body dies in one timeline (Timeline A), your subjective awareness doesn't just stop. 

Because you cannot experience being unconscious, your awareness functions like a Large Language Model, predicting the "next logical word." It automatically localizes into the absolute nearest, highest-probability parallel timeline (Timeline 😎 where a version of you survived the event.

​2. The Local Hardware Rule (Why We Forget)

When you jump from a dead body in Timeline A to a living body in Timeline B, you do not bring the physical brain (the "hard drive") of Timeline A with you. Your consciousness downloads into the brain of Timeline B, which already contains its own identical memories up to that split-second. 

Therefore, you only remember what the local hardware experienced, making the transition feel completely seamless to your conscious mind.

Part 2: System Glitches & The Past-Life Loop

Because transferring across infinite timelines is a massive processing task, the system occasionally experiences latency or synchronization errors.

  1. The Anatomy of a "Glitch"

During a sudden or violent shift, the consciousness algorithm can momentarily clip into a radically different timeline, one with different physics, settings, or a different life entirely (similar to an AI "hallucination"). 

Because this timeline doesn't match your core data, the system quickly course-corrects and snaps you back to a normal timeline. You retain the vivid memory of this glitch because you didn't die in that bizarre universe, you just visited, writing the data into your permanent subconscious cache.

  1. The Current-Day Reset (The Age-100 Reset)

To solve the problem of biological decay and aging, the system utilizes a chronological loop. 

When your physical body reaches old age (e.g. 100) and dies, the algorithm doesn't search forward into a dead future. 

It searches across the entire timeline map (the "Block Universe") and drops your consciousness back into your own 2-year-old body in the past.

Because a toddler's brain lacks the hardware to hold 100 years of adult data, the system strictly compresses your previous life into the subconscious. 

This explains why some young children remember specific details of past lives before the childhood amnesia barrier permanently locks the data down.

Part 3: The Higher-Dimensional Framework

Reality is not just parallel: it is layered vertically through spatial dimensions. 

Your identity exists simultaneously across all of them.

  1. Dimension Scope of Awareness Role in the Hypothesis.

3rd dimension linear passenger traveling forward down a single timeline. 

The Avatar: The local player gathering raw data, experiencing emotion, and learning lessons.

4th dimension perceives the entire birth-to-death timeline simultaneously. 

The Kernel (The Soul): The core program that monitors all 3D timelines and directs the auto-complete jump upon death.

5th dimension Perceives and navigates the entire multiverse plane of choices. 

The Programmer: Consciously choosing which major branches of history, reality should navigate.

  1. The 4D Self is the Guardian

Your 4D consciousness acts as the system manager. 

When you experience an "impossible coincidence," a massive stroke of luck, or a profound gut instinct that saves your life, it is your 4D self ensuring your 3D reality continues, through a jump to new reality.

Part 4: The Ultimate Goal (Ascension)

We are not trapped in this loop forever. 

The 3D reincarnation cycle is an informational school designed to expand your consciousness.

Every time you live a life, a tiny fraction of a percent of what you learned: empathy, wisdom, physics, mastering fear, is cached permanently into your higher self.

​The loop officially breaks when humanity in the 3D timeline reaches a specific technological milestone: infinite life extension and expanded brain capacity (the Singularity).

Once technology allows the 3D physical brain to hold infinite data and stop aging, the system no longer needs to fold your consciousness backward into a 2-year-old body to keep you alive. 

The hard drive never has to be formatted again. 

Your awareness seamlessly expands from 3D to 4D, allowing you to natively perceive your entire history at once, before beginning the next cycle of climbing from 4D to 5D.

My thoughts on this come from an experience I had almost 40 years ago, which I will add in the comment section.

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u/xflyingcatsx — 1 day ago

What do you guys think of reincarnation ?

Apparently reincarnation has some evidence to back it up, a lot of people on spiritual subs report remembering past lives and Ian Stevenson’s study reported 2000 children remembering their past lives in detail. I hope it’s untrue tho, reincarnation is the worst type of afterlife but it seems most likely true, tell me what you guys think of it.

Quantum immortality also makes sense but reincarnation seems to have more proofs to back it up.

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u/richandepressed — 5 days ago

I‘m new and terrified

Guys I’m really not a smart person! I recently discovered quantum immortality and I‘m kind of scared of this concept and I don’t fully understand it. Before i even knew this was a thing I thought about how I surely must‘ve died in some way before because I came close to death so many times in my life. I‘m kind of spiralling because if its true what does that even mean??? If my consciousness has „switched“ timelines what happened to me in the other timeline am i objectively dead there? What about my family and friends did I leave them behind in the other timeline because it‘s only my consciousness that split? And are people like seriously conscious in every timeline? because how are the people that technically got left behind conscious in this timeline? Is this all just something my mind made up?
Also I’m wondering is there something like an original timeline?

I feel sad when i think about this i feel like i left my OG family behind ☹️

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u/kittydulce — 5 days ago

What happens if someone dies of old age ?

This is pretty new to the theory, but let's say someone dies in a car crash or whatever: he can avoid it at a different time, and that seems to make sense.

However, if someone dies from old age, what is going to happen? Is he going to live 200 years in a different lifetime, and then two million years, and then just live infinitely? I mean, how does that work?And also, if someone is born a dwarf in this lifetime, he is going to be a dwarf in other dimensions too, over and over and over again.

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u/richandepressed — 8 days ago

Can you reunite with loved ones who died in your timeline?

Please let me know the theories on this. I’m new to quantum immortality theory. Thank you!

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u/lana6673 — 10 days ago
▲ 1 r/QuantumImmortality+1 crossposts

Schrödinger's cat is a thought experiment devised by physicist Erwin Schrödinger in 1935. No real animal was harmed.

Imagine a sealed steel box. Inside are a cat, a Geiger counter, a tiny amount of radioactive material, a flask of poison, and a hammer. If a single atom decays, the counter detects it, the hammer smashes the flask, and the cat dies. If the atom does not decay, the cat lives.

Schrödinger waited an hour. According to quantum mechanics, while the box is closed, the atom exists in two states simultaneously: decayed and not decayed. Therefore, the cat is both alive and dead. This is called superposition.

The paradox is that everyday life does not work this way. A cat cannot be both alive and dead. Yet quantum mechanics claims otherwise — until an observer looks, a particle exists in all possible states at once. Only when the box is opened does the superposition collapse, and the cat becomes either alive or dead.

Schrödinger created this experiment to highlight the absurdity of that interpretation. He meant to say: "Look where your theory leads — a cat both alive and dead, this is madness." Over time, however, Schrödinger's cat became the most famous metaphor in quantum physics.

Today the phrase is used for any uncertain situation where the outcome is unknown until you check. A package that may or may not have arrived, a message you have not yet opened — all are jokingly called Schrödinger's cat.

Although it started as a joke.

u/flay1asap — 13 days ago