• grue@lemmy.world
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    6 months ago

    It is statistically impossible for life to exist on exactly one planet in the universe. Earth just isn’t that fucking special!


    Edit:

    A statistical impossibility is a probability that is so low as to not be worthy of mentioning. Sometimes it is quoted as 10−50 although the cutoff is inherently arbitrary. Although not truly impossible the probability is low enough so as to not bear mention in a rational, reasonable argument.

    https://math.stackexchange.com/questions/2049714/can-something-be-statistically-impossible#2049722

    If I’m wrong about the definition, at least I’m not wrong alone.

    • lauha@lemmy.world
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      6 months ago

      Life is certain to exist, but multicellular life is less likely and intelligent multicellular who reaches for the stars is even less likely

      • grue@lemmy.world
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        6 months ago

        Who said anything about multicellularity, intelligence, or space travel?

        Point is, Obama’s answer was vacuously true, and the only answer a non-idiot could reasonably could have given.

        …Okay, I admit he could have quoted Contact for extra style points:

        “The universe is a pretty big place. If it’s just us, seems like an awful waste of space.”

        But aside from that, the answer he gave was the only one he could reasonably have given.

        • Mouselemming@sh.itjust.works
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          6 months ago

          Okay wait, listen to yourself. You expected Obama to give a reasonable answer, and of course he did. Gosh, wasn’t that nice? You might agree or disagree with his choices and priorities, but even his worst policies had SOME sort of reason behind them. And were stated in complete grammatical sentences that stayed in topic.

        • MIDItheKID@lemmy.world
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          6 months ago

          Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.

          Arthur C. Clarke

      • mrbutterscotch@feddit.org
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        6 months ago

        We don’t fit that description either though. We’re barely reaching for the stars. In terms of travel we’ve explored the equivelant of our front porch.

    • SendMePhotos@lemmy.world
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      6 months ago

      Earth is special. More special than most of the other planets that exist. But it’s not the only special one.

      • Karjalan@lemmy.world
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        6 months ago

        More special than ones we’ve detected, but our detection methods have a very biased available dataset.

    • Stern@lemmy.world
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      6 months ago

      If we presume a functionally infinite universe sure life pretty much has to exist in multiple spots. That’s a big presumption by itself though.

      After that, is said civilization on some dinosaur shit? Are they so far beyond us we look like cavemen in comparison? Are they looking around the universe and just missed us? Do we want them to find us? Historically humanity finds less advanced groups and kills, enslaves, or just robs them blind. No reason to think the alien conquistadors would be better then the Spanish ones.

      • bufalo1973@piefed.social
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        6 months ago

        You are missing something: maybe the next “neighbor” civilization is in Andromeda or even farther. There is A LOT of space in the universe.

        • SpacetimeMachine@lemmy.world
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          6 months ago

          I would be very surprised if it was that far away to be honest. They estimate there are likely trillions of planets in our own galaxy now. For us to be the only one would be absurdly unlikely.

    • BarneyPiccolo@lemmy.today
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      6 months ago

      However, in the universe’s life of billions of years, many civilizations may have risen and fallen, just not at the same time. Maybe life is such a rare confluence of events, that it only springs up occasionally, and never at the same time.

      • grue@lemmy.world
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        6 months ago

        Again, who said anything about “civilization?” Even just on Earth, life has existed for 4 billion years. That’s 4 billion of the 14 billion years the universe as a whole has existed, or 28% of the time, which I wouldn’t call “rare” at all!

        Life on Earth started damn near immediately (in geologic terms) as soon as the crust cooled enough to not set it on fire cook its proteins (it wouldn’t have caught fire because the atmosphere didn’t have oxygen yet). Does that sound “rare” to you?

      • SpacetimeMachine@lemmy.world
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        6 months ago

        As far as the history of the universe is concerned we are actually super early on in its lifespan. So in some ways it’s actually more likely that we will be one of the early civilizations that perish before the others show up.

      • SaveTheTuaHawk@lemmy.ca
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        6 months ago

        The problem is the human mind cannot understand the concept of how far one single light year is. Even Fermi struggled.

      • rumba@lemmy.zip
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        6 months ago

        This has always been my suspicion, we are not (intelligently) alone in the universe, but in time.

    • theherk@lemmy.world
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      6 months ago

      It isn’t. Check out this talk by Dr. Kipping. If you role 1000 x D6, you might say it is statistically impossible to role that number. And you’d be close to right; it was very unlikely. But you did role it.

      eta: The number of people supporting the phrase “statistically impossible” is troubling. This is why it is a problem that prominent scientists have made similar statements based on intuition. It isn’t based on statistics. We do not have sufficient data to make binary statements about Drake’s equation, nor even really to make any quantitative statements about the outcome, but certainly not binary ones.

    • hector@lemmy.today
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      6 months ago

      It’s also seemingly impossible for aliens to traverse dozens, if not hundreds or thousands of light years. Unless it’s in the solar system, which it’s not, it’s not actually possible. They could send a machine perhaps. Unless you believe in some type of warp speed, which I don’t.

      • monkeyslikebananas2@lemmy.world
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        6 months ago

        I personally don’t believe aliens have come to earth as I don’t have evidence. But I also don’t discount what can be done or us being able to figure out something warp-like.

        A lot of what we know about the universe now would have been impossible to fathom just 2/3 centuries ago. Do humans know how to get close to or exceed the speed of light right now? No.

        But there have been billions of years and probably countless possible civilizations that maybe could.

        • hector@lemmy.today
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          6 months ago

          Those that claim to have all the answers to the universe are certainly mistaken and there is a lot more than we know I totally agree on that. At every point in human history experts have claimed to have all the answers, and have always been wrong, but we are to believe they are right this time?

          Not the least on the cosmos, we only see an infinitesimal part of a greater whole too, just a bacteria on a speck of dust in something we have no way of understanding. Part of wisdom is realizing what you do not, and cannot know, I have always thought.

          That said, I just don’t see warp speed as possible, maybe there is something that travels faster than the speed of light, and if that is the case, maybe that could be used. But I don’t think there are portals or bends in space time or whatever theories they are putting forward, any more than I believe time travel is possible.

    • AA5B@lemmy.world
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      6 months ago

      Also statistically most likely that no life form has ever been able to leave its solar system, huge limited the opportunity to have detected each other