Does Quantum Immortality Save Schrödinger's Cat?

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Published 2020-03-03
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To quote eminent scientist Tyler Durden: "On a long enough timeline, the survival rate for everyone drops to zero." Actually… not necessarily true. If the quantum multiverse is real there may be a version of you that lives forever.

Hosted by Matt O'Dowd
Written by Matt O'Dowd
Graphics by Leonardo Scholzer, Yago Ballarini, & Pedro Osinski
Directed by: Andrew Kornhaber
Executive Producers: Eric Brown & Andrew Kornhaber

End Credits Music by J.R.S. Schattenberg:    / @jrsschattenberg  

If we can’t ever peer into these other realities that are used to explain quantum mechanics, how do we know they exist? In order to understand what happens to those different branches, and to understand why we find ourselves in one of them, we need to embrace one of the interpretations of quantum mechanics. For example the Copenhagen interpretation, which says that the wavefunction branches that we don’t observe somehow vanish at the moment of measurement. Or the Many Worlds interpretation, which states that those other branches are just as valid as ours - implying that reality may split and multiply in all possible ways. In that case we only see one branch because we live in that branch, and the others are rendered inaccessible by decoherence. But today I’m going to offer a test. Admittedly NOT a very useful one - but one that’s fun to think about. We’ll call this test quantum immortality. It’s based on the famous Schrodinger’s cat thought experiment.

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All Comments (21)
  • I just assume every action movie is set in a multiverse where the hero is enjoying quantum immortality, for the sake of the story.
  • @StephenByersJ
    I can feel my wave function infinitely branching every time we are promised a topic that “deserves it’s own episode”.
  • @Iamalizard
    There must be a universe where this all makes sense to me.
  • @lucasvella
    There is a branch where in every double slit experiment ever made, the particles always went through the right side slit.
  • Matt, please be real. No serious scientist would ever perform your variant of Schroedinger's cat by climbing himself into the box. That would truly be wacky, and only a "mad scientist" would even consider something insane like that. Every real scientist will instead kindly ask one of his PhD students to step into the box as part of his PhD research, and if necessary repeat this experiment again and again, until one finally survives, or the grant runs out.
  • @TartarugaPreta
    “Live as though this is your one quantum time line.” I smell t-shirt.
  • @LeonMRr
    This experiment should be called Revenge of the Schroedinger's Cat
  • @YYYValentine
    "Delayed choice experiment is absolutely not as mystical as it seems!" Don't forget to make that episode!
  • @Tru7hiness
    You forgot the best corollary to the "Science isn't Magic" principle:. "Any science distinguishable from magic is insufficiently advanced."
  • 7:20 “live as though this is your one quantum timeline” - that was the inspiration I needed and my new motto from now on - in this quantum timeline anyway.
  • @Elbuarto
    You, a simpleton: YOLO! Me, an intelectual: Live as though this is your one quantum timeline.
  • @SunnyGoodbye
    I am so happy I managed to get the challenge question his right, in a different quantum timeline...
  • @chriskid56
    "If the quantum multiverse is real there may be a version of you that lives forever" God please don't let me be that version
  • @ThisFinalHandle
    This explains why I have to struggle so much in this life. Because there are infinite other me's hogging all the karma.
  • "I'm not killing all the humans," said Skynet, "just all of them except you. Check the math! This way humanity has the greatest statistical chance of living as long as possible -- precisely as you asked."
  • I thought of this idea all on my own, but was upset when I went on the internet to find people already thought about it before me.
  • @ScCat666
    Does Quantum Immortality Save Schrödinger's Cat? Well... yes and no. :D
  • @yourstruly4817
    It appears to be a multi-phasic temporal convergence in the space-time continuum.
  • Having had a few near death experiences myself this is a topic that I find extremely interesting. Very informative video. Good job!
  • @sth0408
    Excellent episode. The thing I've always taken away from the quantum immortality idea is that, while the Schrodinger's Box experiment is a great way of illustrating the point, as you said in the episode, life is a series of quantum steps. So actually, box or not, all of us will have an infinite amount of branches where we experience immortality. The philosopher in me thinks, if you take this theory as correct, isn't it akin to saying that we will all experience immortality in our life/world line of consciousness? After all, so far in life I have never experienced my own death, and I've never met another person who has experienced theirs, either!