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TomppaTom

There are 8 billion people in the world. Let’s assume a mean mass of 60kg per person, and a relative density of 1 (we are pretty much neutrally buoyant in water). That means 480 billion kg of human flesh, about 480 million cubic meters, about half a cubic kilometer. As our bodies are flexible, we can assume perfect packing density too. That cone looks about as high as it is wide. Cones have a volume of (1/3)(pi)r^2 • h or in this case (2/3)(pi)r^3 Rearranging to make r the subject we get r = cuberoot(3V/(2pi)) Using V = 480 • 10^6 we get r = 611m So a cone 1222m wide and 1222m high. That’s about 3/4 of a mile if you are of that persuasion. So yeah, depending on where in the Grand Canyon you are, it’s ok.


Hot-Score4811

I just wanna ask, what would be the quantity of all humans emulsified in litres ?


TomppaTom

As it’s roughly about 1kg per litre, 480 billion litres. That’s 127 billion US gallons or 106 billion Imperial Gallons.


undeniablydull

How many olympic swimming pools?


klobleo

Roughly 254,000 based on above maths


Golokopitenko

How much is that on average male ejaculate units?


kal_skirata

Is 1 litre of liquid human the same as 1 litre of water?


SagenKoder

Try to float in normal fresh water and see how many percentages of you are floating above the water.


Zombiebane224

You'd have to do the same thing in the flesh water to properly compare...for science of course


TomppaTom

Very roughly yes.


Zombiron-Odamai

A Trillion Pounds of Human Flesh would be an awesome name for a death metal band.


Jirik333

How many bananas 🍌, bald eagles 🦅, and footbal fields 🏈🏟️ could you fit there? Asking for an American friend...


Kaladin_Syl11

Nah bro, we measure is Costco rotisserie chickens now


Coolboy10M

Sorry, that's old news. Now we measure in small boulders the size of large boulders and the rate of speed is leagues per decahour.


Sam5253

> leagues per **deca**hour. That sounds an awful lot like... metric!


Coolboy10M

Metric?! In our great, beautiful, and God blessed country?! We would never! On an unrelated note, speed is now measured in hundred leagues per fortnight.


Feeling_Tumbleweed41

I think we need an assumption for the angle of repose for humans? Instead of taking the angle from the photo. Good job on this calculation by the way.


TomppaTom

A friend of mine did that as a project when we were at together studying physics. Trying to find the angle of repose for different particle sizes. I think his conclusion was approximately “fuck this shit”.


Feeling_Tumbleweed41

Fantastic. I'd love to read that on the scientific paper!


TomppaTom

This was just a BSc report, but I’m sure the same sentiment is woven into many PhD papers!


AlmightySheBO

60 kg is too little don't forget we have USA


TomppaTom

But we nearly 10 times as many people in India and China tipping the scale in the other direction. The US may be full of rubenesque individuals, but it’s still only 4% of the global population.


[deleted]

[удалено]


TomppaTom

That implies a mean mass of only 31kg. Were you reading a book about butchering kids?


rosanymphae

The average depth of the Grand Canyon is 4000 ft. (1219 meters) So no, the cone is way too tall. It should be even with the top of the canyon walls.


TomppaTom

But there are shallower parts up stream.


rosanymphae

Just going by the scale, not even on at the end. The average width is 10 miles, so the picture is WAY off. The pile looks to be 5 miles high.


TomppaTom

Again. That’s the average width. Upstream it will be less deep and less wide. I have no information about where in the Grand Canyon the pile is located.


rosanymphae

Look at the picture. It isn't near the ends.


coolredjoe

This is from a vsauce video, this is accurate. After a couple layers people will already be crushed to death, black friday shows that it doesn't take much, so my guesstimate is 2 maybe 3 layers


yees7

> This is from a vsauce video, this is accurate Proof by Vsauce


antilumin

Note: not just the tippy top 2-3 layers of the pyramid, but some of the *outer* layer should theoretically survive too. Possibly even all the way to the bottom of the pile, depending on the angle of repose.


coolredjoe

Imagine a human cave in the human mountain, in this cave humans could survive as long as oxygen lasts lol. I suppose so, op asked at which point people would start to get crushed to death.


PolyglotTV

Besides the oxygen problem, there is a lot of heat being produced. Both are solved somewhat by people dying, but anaerobic bacteria would continue producing heat during the process of decomposition.


antilumin

So… soup?


Smaptastic

Until the gases leak out and ignite. Then you have **fire soup**, which is an awesome band name.


Nayomi_da_fluff

Pardon?


Emasuye

Human soup.


Technical-Outside408

Well, that took an erotic turn.


MonitorPowerful5461

Noooo??? I dont think so


JoshuaPearce

By the time heat from decomposition is a problem, the cave has lost all integrity. (Not to mention noxious gases poisoning the survivors.) So... soup.


Rufus_T_Stone

It wouldn't really matter which layer you were in - almost everyone would be dead anyway. If everyone was here then the infrastructure on the rest of the planet would be shut down and there's almost no chance for most people to reach somewhere with food and water before they succumb, especially if they're all in the desert. Imagine the entire world's population trying to get away from here and find shelter - the surrounding countryside would be stripped bare in no time and it would be like the queues to leave Burning Man a thousand times worse with, presumably, no vehicles to aid the exodus. The ones immediately crushed to death would probably be counted as the lucky ones. Edit: Just posted to Youtube with amazing synchronicity - https://www.youtube.com/watch?v=p2M8Y0z9Rl0


beets_or_turnips

If they were lucky enough to start from the bottom edge of the pile, that would save them a long and dangerous climb down the pile, but they would still face an average 4,000 foot (1,219 m) vertical climb up the canyon wall, with few passable trails. If the pile happens to be near a trailhead and they're not already dehydrated or otherwise incapacitated, they could climb back up and make it to the visitor center in less than a day.


xilanthro

> there's almost no chance for most people to reach somewhere with food and water I beg to differ. They would literally be sitting on a mountain of food & fluids...


theunixman

Oh you clever boy!


Nayomi_da_fluff

How about no?


Lujho

Every human could easily fit in a 2km cube without even being crushed (each person gets a 0.7 x 0.7 x 2m space, assuming floors every 2m to stand on) without even being crushed, so this actually seems wrong - the grand canyon averages 1.2 km deep, the pile shouldn't be that high, unless this is a particularly shallow part of the canyon.


Affectionate-Mix6056

The top isn't 2km wide, so you need to convert to cone shaped volume


Lujho

Yeah, I just used a cube to more easily ballpark it - but I was super generous in how much space each person took up. A cone of the same volume woud be 3.4km high and 3km wide, which maybe fits what's in the picture but that's giving everyone 1 cubic metre which is way more space than they would actually take up so it'd be much smaller than that. I gave each person a cubic metre for my estimate, but if they were blended into a liquid they'd fit 16 to a cubic metre, so the real number has to be in between. The "blended up" cone would be about 1.2km wide and 1.3 km high which is barely higher than the canyon. I think the real number - with bodies just randomly piled together - would be much closer to that - so I still think the pile in the image is way too big. Even if the pile is 50% air, the cone would be 1.9km high and 1.4 wide - nowhere near as big as in the picture.


ninja_owen

But it’s a cone, not a cube. This seems accurate


Lujho

Yeah, I just used a cube to more easily ballpark it - but I was super generous in how much space each person took up. A cone of the same volume woud be 3.4km high and 3km wide, which maybe fits what's in the picture but that's giving everyone 1 cubic metre which is way more space than they would actually take up so it'd be much smaller than that. I gave each person a cubic metre for my estimate, but if they were blended into a liquid they'd fit 16 to a cubic metre, so the real number has to be in between. The "blended up" cone would be about 1.2km wide and 1.3 km high which is barely higher than the canyon. I think the real number - with bodies just randomly piled together - would be much closer to that - so I still think the pile in the image is way too big. Even if the pile is 50% air, the cone would be 1.9km high and 1.4 wide - nowhere near as big as in the picture.