this post was submitted on 13 Nov 2024
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Science Memes

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[–] s_s@lemm.ee 11 points 21 hours ago* (last edited 21 hours ago)

Fewer than 50% of the cells in "your body" contain your own DNA.

There are many more bacteria, since they are much much smaller than "your own" eukaryotic cells.

Where you end and your "gut flora" begin and end is not as clear as you might first believe.

[–] iAvicenna@lemmy.world 9 points 22 hours ago (1 children)

he would have to snap his fingers infinitely many times to kill everyone so he is not that powerful

[–] Zron@lemmy.world 9 points 20 hours ago (3 children)

That’s an interesting question as to whether the infinity gauntlet rounds down.

Like, if there were 3 survivors of a species and thanos snapped the universe, does the gauntlet round up to 2 survivors, or down to one?

[–] Bytemeister@lemmy.world 5 points 5 hours ago (1 children)

I thought it was just an instantaneous, every living thing has a 50/50 chance of living or dying. No rounding, no species specific exceptions.

[–] HK65@sopuli.xyz 2 points 2 hours ago

So that means that since bacteria and the like outnumber us by orders of magnitude, statistically speaking, multicellular life would be wiped out completely.

[–] iAvicenna@lemmy.world 1 points 13 hours ago

or down to one and a half?

[–] blady_blah@lemmy.world 11 points 23 hours ago (3 children)

The snap was always the dumbest part of the entire avenger series. Let's say for example, you have a bunch of deer that are eating the forest bare, so you let hunters kill half of them... Then what happens next? You have the exact same problem in a few years. The snap solves nothing.

Also if you can snap your fingers and do this, why can't you snap your fingers and make twice the food supply?

The snap is just stupid, even in a world made-up physics-defying superheroes.

[–] Bytemeister@lemmy.world 2 points 5 hours ago

Even worse than that. 50% of all life dies, right? That's 50% of the plants too. If you know anything about food chains, taking 50% of everything leaves the top of the chain massively overloaded.

[–] zod000@lemmy.ml 2 points 5 hours ago

To be fair, it made slightly more sense in the comics, though still batshit. In the comics there was no noble purpose like they tried to shoehorn in for the MCU. IIRC, Thanos was literally doing it to impressed Death (the cosmic entity) to gain her affection.

[–] djsoren19@yiffit.net 13 points 19 hours ago (1 children)

It's stupid only because they try to rationalize it.

Comics Thanos just wants to commit genocide so his crush notices him. That's also stupid, but he's a big purple space alien so what can you expect? Using a magic space glove powered by stardust and wishfish to kill half of all life as an incredible gesture of his devotion to Death makes internal sense.

[–] BatmanAoD@lemmy.world 4 points 5 hours ago

His crush is literally Death, so it kinda makes sense that genocide would be the way to get her attention.

[–] fsxylo@sh.itjust.works 7 points 1 day ago

It's bullshit space magic, it probably considers what Thanos thinks of as life. Why it snapped the birds is a different plot hole altogether, because it means he snapped away half the food, too.

[–] lunarul@lemmy.world 64 points 1 day ago (1 children)

If surviving humans lost 50% of their gut bacteria, that means that those snapped away left 50% of their gut bacteria behind.

[–] Benjaben@lemmy.world 9 points 1 day ago

More gut bacteria for the rest of us, that's what I say!

[–] Etterra@lemmy.world 14 points 1 day ago (1 children)

Yeah but I thought about this I realized that whenever somebody vanished from the snap it would leave behind a slurry of gut microbes and a (different looking) dust from all of the skin mites, microbes, and stuff that just live all over the human body. Meaning the aftermath would have been even messier.

[–] jol@discuss.tchncs.de 11 points 1 day ago (1 children)

Maybe that's exactly what the dust was.

[–] Etterra@lemmy.world 3 points 12 hours ago

Then it should have been goopier lol

[–] Anticorp@lemmy.world 46 points 1 day ago (8 children)

That's not how it worked. He killed 50% of gut bacteria by killing 50% of the hosts.

[–] LovableSidekick@lemmy.world 1 points 23 hours ago (1 children)

Depends on whether "50% of all life" means half of the contiguous lumps of cells we call "creatures" or simply half of all living matter.

[–] BatmanAoD@lemmy.world 2 points 5 hours ago

You literally see individual people dissolving, and others being unaffected. How is this unclear?

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[–] aesopjah@lemm.ee 53 points 1 day ago (1 children)

or 100% of the 50% that are destroyed are the gut bacteria in the humans etc that got snapped

[–] Enkers@sh.itjust.works 41 points 1 day ago (1 children)

The alternative is even more disturbing: snapped humans leave behind a cloud of poopy gut microbes.

[–] nieminen@lemmy.world 46 points 1 day ago (1 children)

In reality, since it was more random, some poor soul would have their whole biomes destroyed, and just be rekd.

[–] Enkers@sh.itjust.works 39 points 1 day ago (2 children)

That would be incredibly unlikely. Due to the huge number of gut microbes, the chance to even lose 5% off of the median, even with billions of trials, is functionally zero.

[–] errer@lemmy.world 40 points 1 day ago (4 children)

Maybe in your gut biome, but mine is just two or three really, really large bacteria

[–] DannyBoy@sh.itjust.works 4 points 1 day ago

Have you ever been prescribed a wolf?

https://xkcd.com/1471/

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[–] yetAnotherUser@discuss.tchncs.de 5 points 1 day ago* (last edited 1 day ago) (4 children)

To expand a little:

For a much smaller sample size of just 1 million, the probability to lose just 1% off of the median is basically zero.

WolframAlpha doesn't even bother to calculate the exact result and just rounds it:

https://www.wolframalpha.com/input?i=P%5B490000+%3C+X+%3C+510000%5D+for+X%7EB%281000000%2C0.5%29

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[–] marcos@lemmy.world 37 points 1 day ago (1 children)

Losing 50% of your gut bioma will be fixed in an hour or two.

[–] Kalkaline@leminal.space 11 points 1 day ago

Yeah, yeast doubling rate is around 90 mins in optimal conditions, I would assume the rest of the microbes in your gut would have a very similar rate and they would be well adapted to those conditions.

[–] Contramuffin@lemmy.world 12 points 1 day ago

So will bacteriophages and viruses be snapped as well? Does it mean that scientists can utilize the Thanos snap to determine for good whether viruses are alive?

[–] Kolanaki@yiffit.net 10 points 1 day ago* (last edited 1 day ago) (3 children)

The snap must take intention into account, like a genie, and not the literal wording of the wish, like a monkey's paw, because otherwise everyone in the universe would have just been cut in half.

But also: what if Thanos himself got snapped out, along with the power glove (because for some reason it turned their clothes into dust, too)? The heroes would have been fucked, right? It's been a minute since I saw the movies but IIRC, they used the time stone to go back in time. But what if the stone was gone because it was part of Thanos' attire? He himself used the stones to destroy the stones, so there is probably a timeline where he got snapped away with everyone else, destroying the stones in the process.

[–] BatmanAoD@lemmy.world 1 points 5 hours ago

The stones were destroyed before the remaining Avengers found Thanos. That's why they went back in time. And they needed Tony not to be killed by the snap (hence Strange's bargain) so that he could invent time travel without relying on the time stone.

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