Social classes are a phenomena that appears in the age of metal, specially since the arrival of bronze and weapons. Bronze is a hard metal able to create weapons that can easily kill a human being. Thus, with bronze the first social castes of warriors take control of history, killing those who oppose them. They expand worldwide. Wherever they go they extinguish previous human cultures. In the age of metal it is clear that humans are evolving a new kind of atomic species stronger than carbon: metalforms that are harder, and can kill human life. If man had become the top predator of the Earth in the Paleolithic thanks to his brain power and tools, as we enter the metal age, it will be the properties of metal and the forms constructed with it, that will determine power.

In this manner weapons became the top predators of History, controlled by hordes of warriors that become elite castes of human societies, and divided societies in two groups:

- The animetals, the upper castes, the warriors that controlled the use of metal-weapons, and became aristocracies and kings that subjugate other humans.

- The human beings, the common men, farmers, artisans, and priests, who lived as free human beings, in harmony with nature, during the Neolithic, but became servants of animetal warriors. Since animetals massacre human beings when they oppose the dictatorship of weapons.

The first pyramid of social hierarchies, of some being "more equal" than others, appears in the archeological records of history, coinciding unmistakably with the arrival of metal. First weapons, then money, and today scientific machines. We talk of three social classes, based on metal.

- Elite class. People who create metal, either weapons, machines or money: warriors, traders and scientists. They direct the rest of humans with metal-energy (weapons) or metal-information (money, scientific machines). Today they still do the same through political systems, backed by armies, or through companies that reproduce money and machines.

- Middle Class. People who are controlled by those tools of metal-power. They are given money and weapons by their elites. They are either used in war as soldiers or bought with a salary as workers.

- Energy class. People who have no access to weapons or money. They are “enemies” and “corpses” killed in wars; or they are poor, without rights to money and goods acquired with money. They are preyed by metal-species. As the economic system evolves and uses machines as “Middle and Energy classes”, those two social groups slide into poverty and obsolescence, isolated in “third world nations”, and “ghettoes of the first world”:

Social classes are obvious. Men are all born equal, but then some become animetals. Those humans who associate to metal-species of high energy or information, notably weapons and machines, are less equal, than naked men. If you have a weapon you can kill someone and take his property. If you become rich, you can use money to give wage-orders. You can even use money to order other people to kill for you. In this way, a pyramid of social classes, manipulated by murder and monetary corruption, has grown in history. Parallel to the growth of social classes, ideologies that justify murder and monetary orders have developed to protect the “rights of animetals”.

Animetals that rule the world with money, weapons and machines Vs the Human Beings who want to rule the world with verbal laws, and reproduce human goods, housing, food, education, peace and love... are the two social classes of history. Those terms are a scientific way of explaining the old “fight between the haves and the have nots”, “the rich”, and “the poor”, in economic terms; “the army, kings and politicians”, and the “citizens”, in military terms; the “mathematical, aesthetic scientist”, and the “verbal, ethic citizen” in terms of education, the first and the third world in geographical terms, the right and the left in political terms, the yuppies and the hippies as ways of life, the individualists which rely on machines and money to go through life, and the socialists that rely on other people...

They are the original “sinners” of the Tree of Science, and its metal-religions, and the “good people”, of the Carbolife Paradise and Love Religions in religious terms;. the Homo bacteria, and the socially evolved Homo organicus, or the animetal and the human being, in biological terms...

This double class division, based in the use of machines and other products of the “tree of metal”, specially weapons, is common place along history. It was even more clear in the XIX century, when it was explained as a struggle between social classes. However, Marxism was a very misleading way of explaining that opposition. Since really what it is happening throughout history is a fight between two species, metalife, and carbolife. Some humans -very few- had sided and backed metalife. As metalife multiplied and evolved, more humans became dependent on metalife.

Today the world is upside down. Most people are Adams who believe in the Tree of Science, while very few people believe and love nature. In the XIX century there were those who had machines and metal, the military, industrialists, and money-makers, and those who were controlled or suffered the worst consequences of metal-instruments, soldiers, workers, the poor. They seemed two clear-cut social classes. Yet they were opposed not by any law of nature, but by the fact both were holding different opinions about metal, and one class used metal against the other.

If we look at the surface of things, as XIX century sociologists did, we cause enormous harm to the human cause. Animetals became indeed in the XIX century, pressured by Marxist militancy, defensive against any criticism of their machines. When a healthy criticism of machines should have helped both kind of humans, the poor and the rich, against the common threat of weapons and robotics. Today the differentiation between both groups is blurred, as machines become so common that even the poor possess them, and even the rich are subject to the negative consequences of an excess of machines.

The former proves that the underlying cause of social struggle was deeper. It was the fight between nature and metal-species. Now when metal-species are becoming self-reproductive, and independent of mankind, as robots that soon will prey over all human beings, social classes are blurring. We can say indeed, that as the Robotic Evolution kicks off, both groups, the reproducers of machines, designers, and holders of machines, to one side, and the workers, and soldiers, become a single group, “human beings”, the species that is entering in competence with robots.

What this means is that the rich who have relied on metal, are about to wake up also to the fact that machines can be self-reproduced, self-feeding, and self-consumed (vitalized by their chip-brains). So the rich could find soon that they are also obsolete, no longer needed by the industrial system. That they are also outside the favors of machines, and soon will have to compete and fight against them, as the common man does. Surprisingly it is not the present sociologist, that relies too much in mathematical languages who has noticed this, but the primitive prophet=historian of the future , who proclaimed that in the time of Apocalypses, in the last battle against the tree of science, all men will be naked, and together. Indeed, when the robots of the rich no longer obey them, when the computer screens become blind, we will all men be together, in the judgment day. Let us pray this never happens, let us pray the animetals realize on time, and decide to control the evolution of metal, their rival species, according to the laws of social evolution, without any symbiotism with human flesh. Since against common ideologies of competence and Social Darwinism the real law of Biology is that only species which are different (such as men and machines) compete for survival, while individuals which belong to the same species (such as human beings do) evolve socially by means of communication, and sharing of energy and information (love). Thus the ideologies of machines are false, against the natural laws of social evolution spelt by classic religions of love.

We might say that in the eternal fight between Metal and History, in the fight for survival of species, Animetals that worship the evolution and reproduction of machines cause as an indirect consequence the extinction of History and its natural ecosystems. So according to the only measure of “good and evil”, “right and wrong” which is in the biological Universe, the survival of man, Animetals are wrong, and the common human being, the mass of the human species is right, since if we obeyed love religions and social doctrines based in human goods, the species would survive into the future .