Most of the time people who die from being inverted is not due to asphyxiation or blood pooling in their brain. Instead it is heart failure.

Blood is mostly water, and water is fairly heavy. Most people have around 1.5 gallons of blood in their body which would weigh about 12.5 pounds. This is constantly being circulated around the body by the heart, day in and day out, but for much of the time people's bodies are oriented vertically. Blood must move down into the lower extremities (legs mostly) and then be pushed back up by the pressure of more blood being pushed down. Blood coming directly from the heart is in arteries which are at relatively high pressure (the ones that do the pulsing spurts when punctured), while the return to the heart is through veins which are relatively low pressure.

So there is a significant weight of fluid that needs to be pushed up from the legs to the level of the heart, but from a heart that only pushes some of the time and using pressure that has filtered through leg tissue reducing it significantly. It needs some help! To aid in this the body has specially adapted one-way valves in the veins, basically flaps that prevent blood from flowing backwards down into the legs. Blood can sort of ratchet its way back up to the heart, making the flow much more efficient. Another factor is that the legs have large muscles which when they contract will squeeze on the veins and actually push blood out of the tissue, increasing pressure aiding the return of blood back into the torso. This is why you are told not to lock your legs when standing up such as in military formation, marching band, choir, etc. Locking your legs will relieve pressure from your leg muscles but this means they aren't pushing blood which causes blood pressure to drop and potentially cause someone to faint.

Now if you flip someone upside-down they don't have any of those valves to prevent back flow of blood. The body just isn't adapted to having the head on the bottom and legs on top, Also things like your head simply don't have muscles capable of helping out with blood circulation either. Instead to keep blood circulating properly your heart needs to just pump harder. Which it will, until it cannot anymore. At that point the heart failure occurs and the person dies.

For babies, there just isn't much difference between their top and bottom. The distance doesn't change the necessary pressure that much.

Bravo sir.

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Basically people are confusing evolution with a now defunct theory of Lamarckism https://en.wikipedia.org/wiki/Lamarckism

Stability. When lifting things with your individual hands/arms there is a lot of expended energy spent preventing horizontal movement. When the thing you're lifting is connected across your body there is much less wasted energy.

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You’re able to use multiple muscle groups together instead of isolating a single group. Instead of just relying on the arm, you now have chest and core muscles helping to stabilize and balance.

Because two hands better utilizes back and leg muscles, and you have better balance.

2nd sentence because this sub is dumb and one sentence for eli5 is apparently not sufficient.

A bub in the womb has constant pressure provided by mums body, gravity is also somewhat regulated by the pressure in the womb as that pressure is essentially constant. Blood doesn't really pool in a particular spot in a baby unless there are vascular issues.

I've had multiple doctors over the years suggest honey and lemon as a way of combating cold symptoms. They've never implied that it would cure the cold, only lessen the intensity of the symptoms.

"Left hand separately + Right hand separately is less than Left and right hand at the same time" is what he means

Ok, I mean that’s clearly a joke.

He probably means something like this, but with a smartphone as the last "step" in evolution rather than a computer.

To answer the OP, those are comedic sketches, not accurate representations of what will happen to human evolution in the future.

Edit:

https://www.shutterstock.com/image-illustration/evolution-man-phone-260nw-1016406991.jpg

Then you get a smaller budget next year and the extra budget you had this year is used to cover other teams who ran over budget

Where are you seeing these depictions? I’ve never seen such a suggestion.

For government departments if you don’t spend your budget they will ask why you are asking for more money the following year. So it’s best to spend it all

Kind of off topic, but I have a set of good friends that does exactly this. They live very nearly paycheck to paycheck, and if a windfall comes their way it is immediately spent. An uncle died an left them around $20k and they immediately upgraded their vehicle.

For a while this struck me as absolute madness, but I found out they didn't like the situation either. They get food stamps and other assistance and if their savings goes above a certain (very low) point they no longer qualify.

So if they saved $500/month, which they could, in 4 months time they wouldn't qualify for aid any more and would eat through those savings in a very short time and have to reapply for aid. And the time it takes to jump through the necessary hoops means they miss a rent payment, or have to skip on groceries, or whatever other unfortunate choice.

The system is set up to keep people trapped in it, not to help people become more productive and escape it.

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Toe blood pressure?

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Lmao, yeah this guy is dense.

Also... software is never faster than the hardware it runs on, by definition.

Why can both hands at the same time lift more than what you can when you add together what you can lift with your left and right hand

Yep

Why can both hands at the same time lift more than what you can when you add together what you can lift with your left and right hand

Me either: I get the waves effect, personally, visually it makes sense and by the numbers it makes sense, but I really want to see it in action with sounds because it still doesn’t make sense from a “that’s how it works” perspective.