All living beings are identical in essence and origin.

Everyone is selfless, a facts this article is unable to grasp, but still pretty good.

Article by Ethan Siegel, from: https://www.forbes.com/sites/startswithabang/2020/04/30/how-many-atoms-do-we-have-in-common-with-one-another/?sh=17f62e851b38

(From Vast Self: This article is pretty good but unfortunately the author can’t grasp the ultimate nature of existence, he is not alone, most scientists simply fall short. One day we will make annotations with color text to help our readers see what most scientists can’t and gain a full picture of ultimate existence, We started but have not finished it yet, please see below)

Inside each of us are our organs, cells, molecules, and atoms. On the smallest scales of all, thereare more than 10^28 subatomic particles in our bodies, an enormous number. If we ask the questions of how many of them have been inside another person's body at some point (or body of an animal, tree, rock, a star or tomato, etc) , we get an alarmingly large answer.

When you eat food, drink liquids, or even breathe in the air, many of those atoms wind up getting incorporated into your body. (What we refer to as "the body" doesn't exist as an independent, self-contained entity. It’s a concept our mind imposes on a collection of physical elements—like cells and bones—all of which are made up of atoms. These atoms themselves are not singular or self-generating; they arise from an infinite chain of smaller particles and conditions. Each part of an atom is produced by something else, and no component has an inherent nature that allows it to exist by itself. Every element in the universe is the product of external forces and conditions, meaning that nothing is self-sustaining or self-created. The mind simply labels this collection of atoms as "the body," but in reality, it is just the sum of countless interconnected processes. Therefore, the body—and indeed everything—lacks an independent essence, making everything, by nature, selfless. This is the ultimate nature of existence. The differences we perceive are merely mental labels we assign to phenomena, but these labels do not reflect any inherent reality. Unfortunately, 99% of people, including most scientists, mistakenly believe these labels represent actual, intrinsic qualities of the physical world.) When you sweat, exhale, and either secrete or excrete matter from your body, those atoms go back into Earth's biosphere, where they can eventually wind up getting incorporated into other people's bodies. Here on Earth, everything is connected.

But how connected are we? In particular, how many of the atoms in our bodies were in another human's body at some point? Do we share atoms in common with everyone alive today? With everyone who's ever lived? With King Tut, Cleopatra, Julius Caesar, George Washington, etc.? The answer is fascinating: not only do we each have hundreds of billions of atoms that were once in everyone else's bodies, but we have approximately 1 atom in our body from every breath that every human has ever taken. Here's how we know.

The human body, as we conventionally think of it, is composed of organs that are made of cells. But at an even smaller level, everything within us is composed of atoms: an enormous number of them due to their overwhelmingly tiny size

Let's start by taking a look at what the human body actually is. You might think of yourself as a collection of your macroscopic organs and the cells that make them up. That you're nothing but bones, muscles, skin, and the other organs inside of you. But from a cellular standpoint, that only makes up 4% of the cells in your body. The other 96% are split, roughly evenly, between your blood cells and bacterial cells that live on and in your body.

The blood cells (mostly red cells) live only for about 4 months apiece, at which point they're broken down, their components are excreted, and replaced by new cells that were created in your bone marrow. Bacteria live everywhere that they can: there are around a million bacterial cells on every square inch of your skin, and tens of trillions of bacterial cells thriving in your digestive tract.

The elements in the human body. While, by mass, we are mostly Oxygen, Carbon, Nitrogen and Hydrogen, there are dozens of elements essential to life processes in the human body. There are more than 10^28 protons composing a typical adult human body.

In terms of atoms, these cells are overwhelmingly made of just a few elements. By weight, the human body is:

65% oxygen,
18.5% carbon,
9.5% hydrogen,
3.2% nitrogen,

and about 4% everything else combined. That includes the calcium in your bones, the phosphorous critical to those ATP molecules, the sodium and potassium that are key to regulating your body's neurons, and the sulfur, chlorine, and magnesium that play key roles in your body.

But even if we talk about only the four most common elements, we're talking about remarkably large numbers of atoms. A human being, when you count up everything inside us, is actually an amazingly large collection of atoms: there are more atoms in your body than there are stars in the entire Universe.

Various long-exposure campaigns, like the Hubble eXtreme Deep Field (XDF) shown here, have revealed thousands of galaxies in a volume of the Universe that represents a fraction of a millionth of the sky. All told, we estimate that there are approximately 2 trillion galaxies in the observable Universe, but even if they had a trillion stars each (a high estimate), there would be more atoms in our bodies than stars in the Universe

With each year that goes by, in fact, you might be surprised to learn that more than 90% of the atoms that were in your body are no longer there. Cells get broken down, taken into your bloodstream, filtered by your liver and kidneys, and large components of their contents are excreted. Meanwhile, you ingest and breathe in new atoms all the time, where your body assembles them into new molecules and cells. At any given moment in time, your body contains approximately (for an average-sized human):

4 × 1027 hydrogen atoms,
2 × 1027 oxygen atoms,
3 × 1026 carbon atoms, and
8 × 1025 nitrogen atoms.

These are enormous numbers, even by astronomical standards. And yet, we have to ask where they come from.

The elements that make up the human body and are most essential to life take up a variety oflocations on the periodic table, but all can be generated by the processes of a few different types of stars in the Universe.

Almost all the oxygen and hydrogen in our bodies come from drinking water and breathing air. Meanwhile, most of the carbon and nitrogen in our bodies comes from the food we eat. This makes a difference: it's easier for water and air to circulate all over the planet and mix well and thoroughly. Assuming that atoms are neither created nor destroyed — a really good approximation of reality — some fraction of the atoms of air you're breathing in were once in someone else's lungs throughout history, whether that's Hitler, Caesar, Ramses, or Otzi the Iceman.

Given that hydrogen and oxygen comprise the greatest numbers of atoms in your body, and that the atmosphere and Earth's watery bodies are where those atoms reside, this gives us a method of approaching the problem: by considering the number of atoms in the atmosphere and in all of Earth's water.

The dry Earth, compared to all of Earth's oceans (large blue dot), all the freshwater on Earth(medium blue dot), and all the rivers and lakes on Earth (small blue dot), the last of which is the same relative mass/size of Earth's atmosphere

The Earth is a massive place with an enormous number of atoms, but most of those atoms are in the interior of our planet. The outer part of it — our planet's biosphere — is the only component that we care about when it comes to the atoms we regularly interact with. Overall, the entire sum of all the watery bodies on Earth, including lakes, oceans, rivers, seas, icecaps, glaciers, etc., translates into about 0.02% of the planet's mass: 1.35 × 1021 kg. The entire atmosphere, meanwhile, is about 1-part-in-a-million of the entire planet: 5.15 × 1018 kg.

When we do the math to convert these into atoms, here's what we get:

4.1 × 1040 oxygen atoms (atmosphere),
4.5 × 1043 oxygen atoms (water), and
9.0 × 1043 hydrogen atoms (water).

These are enormous numbers, especially compared to the number of atoms in a human body. But they aren't big enough.

Whether we wear a mask or not, we're still inhaling the same number of atoms into our bodies with every breath we take, and those atoms have the same probability they always did of having once been inside somebody else

If you were to take all of the atoms in your body and let them return to the natural environment of the Earth, and you then thoroughly mixed all the air and water on the Earth, you'd realize a couple of spectacular facts.

One out of every 21 quadrillion hydrogen atoms (2.1 × 1016 atoms) come from your body.
One out of every 26 quadrillion oxygen atoms (2.6 × 1016 atoms) come from your body.

And this is true for everyone's body, on average, when you consider the atoms that made them up a year ago.

But remember: the typical human body has 4 × 1027 hydrogen atoms and 2 × 1027 oxygen atoms in it! If each of us accumulates atoms randomly, that still means that each of us, on average, have hundreds of billions of atoms that were, a year ago, inside each and every other person on Earth. Hundreds of billions of atoms are in your body not only from me and everyone else on Earth, but also from dinosaurs that lived millions of years ago

It's only because atoms are so small, and there are so many of them inside each of us, that this is possible. If atoms were larger and more massive, and we were made of fewer of them, this would be a much more difficult proposition. But the reality is that we are made of extremely tiny building blocks, and there are more of them in each of us than there are kilograms in the Earth, stars in the observable Universe, or grains of sand in the entire Solar System.

In fact, right now, if you take a deep breath and then exhale, by the time a year goes by, approximately one atom from that breath will wind up in every other person on Earth's lungs at any moment in time. In other words, you probably have approximately one atom from Caesar's last breath in your lungs right now.

Each human breath contains approximately 10^19 atoms, which means that even in our well-mixed atmosphere, you probably have around 1 atom that was at one point a part of any breath ever breathed in human history.

Our bodies might appear to remain roughly the same on a year-to-year basis, but the fact is that we're actually expelling the atoms inside of us all the time:

the carbon we exhale in carbon dioxide is the carbon that composes our bodies,
the water that we excrete when we urinate is the hydrogen and oxygen from our bodies,
and the other elements, in a combination of sweat, urine, and solid waste, also leave our bodies on a regular basis.

Meanwhile, we're breathing air, drinking water, and eating plants and animals, and that brings new atoms into our bodies to replace the ones we're constantly losing. Planet Earth is a roughly closed system as far as the atoms in our biosphere go, which means that, given enough time for things to sufficiently mix, these tiny, microscopic components of our world will inevitably spread wherever water and air are allowed to go.

Every time you breathe in, you're breathing atoms of air that were once inside another human being. Every time you take a drink of water, you're drinking water that was once inside another human being. And every bite of food you take consists of atoms that were inside another person. We all share the same planet, the same biosphere, and — at a fundamental level — even the same atoms.

At an atomic level, we're all incredibly deeply connected. Inside your body, right now, are hundreds of billions of atoms that were once inside each other human being on Earth. Throughout the generations and the aeons, those same atoms continue to make up everything: the atoms of the dinosaurs, the plants, the trilobites, and even the single-celled organisms that once dominated our planet are now inside you.

It's your turn now. Make the most of it.

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