Why We Can Destroy Nature but Cannot Recreate It
The Limits of Intelligence develops one of the central implications of Cancerism: the extraordinary expansion of the human brain gave our species unprecedented power over the natural world, but it did not give us an intelligence capable of fully understanding the complexity of the biosphere.
Human beings have learned to transform landscapes, manipulate matter, reorganize ecosystems, and construct increasingly sophisticated technological systems. Yet the same intelligence that made these achievements possible remains limited when confronted with the immense network of relationships through which nature evolved over billions of years.
This fifth volume therefore examines a disturbing asymmetry: our capacity to intervene in nature has grown far more rapidly than our capacity to understand all the consequences of those interventions. The result is a civilization powerful enough to destabilize natural systems, but not powerful enough to recreate the equilibrium it has disrupted.
What if the greatest limitation of human intelligence is precisely that it became powerful enough to alter nature before it became capable of understanding it?
The Central Argument
Human intelligence is powerful, but it is not unlimited. This distinction is fundamental to Cancerism.
If the human brain possessed sufficient processing capacity to understand every interaction within the biosphere, humanity could theoretically transform nature while preserving the stability of the whole system. The destructive consequences of civilization would then be failures of choice rather than consequences of cognitive limitation.
But this is not our condition.
The human brain has already crossed the threshold that enables it to alter natural systems on an enormous scale. It can redirect rivers, eliminate species, transform landscapes, manipulate genes, split atoms, construct global technological networks, and increasingly intervene in the mechanisms of life itself.
Yet it remains far below the threshold that would allow it to comprehend and control all the reactions generated by those interventions. The complexity of the biosphere exceeds the processing capacity of the intelligence attempting to redesign it.
Cancerism therefore identifies a fundamental imbalance: our power to modify the living world is greater than our ability to understand and preserve the system we are modifying.
The problem is not simply that humanity sometimes uses intelligence badly. It is that the very instrument through which we dominate nature operates within limits that become dangerous precisely because its technological power has grown so great.
We have become intelligent enough to break the equilibrium of the biosphere, but not intelligent enough to rebuild it.
Key Themes
Human Intelligence as an Anomaly
The book begins by questioning the conventional assumption that the exceptional development of human intelligence should necessarily be regarded as an evolutionary success. Cancerism instead considers whether the rapid expansion of the human brain may represent an evolutionary anomaly: a development that gave one species extraordinary power while destabilizing its relationship with the natural world.
Biological and Cognitive Limits
However extraordinary its capacities, the human brain remains a biological organ with finite processing power. Our perception of reality is constrained by our senses, our neural architecture, and the physical limits of the organism that produces thought. The fact that we can investigate nature does not mean that we can comprehend its total complexity.
The Limits of Human Power
Humanity has acquired the ability to intervene in systems vastly more complex than itself. But technological power should not be confused with intellectual mastery. The capacity to alter a system is fundamentally different from the capacity to understand every consequence of that alteration and maintain the equilibrium of the whole.
The Will to Power
Intelligence does not operate in isolation. It is continually placed at the service of expansion, competition, domination, and the desire to overcome limits. Science and technology therefore become expressions not only of knowledge but also of humanity’s persistent will to extend its control over nature.
Shared and Artificial Intelligence
Language, writing, printing, telecommunications, computers, and global digital networks progressively transformed individual intelligence into a form of collective intelligence. Artificial intelligence represents the latest and most powerful stage of this process, raising a crucial question: can machines compensate for the limitations of the human brain, or will they merely amplify the same expansionary dynamics that created the ecological crisis? The book explicitly culminates in a chapter devoted to artificial intelligence and its relationship to Cancerism.
The Place of This Book in the Series
The Limits of Intelligence is the fifth of seven books through which the concept of Cancerism is progressively developed.
The first volume, The Planet’s Cancer, introduces the biological analogy between humanity’s expansion and malignant growth. The Planet’s Conscious Cancer examines the paradox of a species capable of recognizing the damage it causes. The Planetary Cancer Empire considers the social, economic, political, and technological structures through which that expansion becomes organized on a global scale. Revelation then turns the diagnosis directly toward humanity and introduces the problem of the limits of human understanding.
This fifth volume makes that problem its central subject. It asks whether the intelligence that gave Homo sapiens unprecedented power over nature is fundamentally disproportionate to the complexity of the systems it attempts to control. The human brain has become powerful enough to transform the biosphere, but its biological, cognitive, and dimensional limits remain insurmountable. The book therefore examines not only individual intelligence, but also the successive attempts to amplify it through language, writing, communication networks, computers, and artificial intelligence.
The sixth volume, P.I. Personal Index, changes form and perspective. Rather than continuing the argument as a conventional essay, it projects some of Cancerism’s implications into an imagined political future, exploring through fictional parliamentary chronicles how institutions and society might respond to the pressures generated by humanity’s present trajectory.
What happens when the limits of human intelligence become the problems that future societies must govern?
Selected Excerpt
From Chapter 6, “Artificial Intelligence” — “Cancerism and the Limits of Intelligence”
What is the connection between “Cancerism” (that is, the theory that equates human beings with the tumor cells of planet Earth) and a topic typical of neuroscience such as the limits of intelligence?
To understand how closely the two themes are connected, we must go back to what Cancerism regards as the carcinogenesis of the tumor afflicting the biosphere. In my first book, “The Planet’s Cancer”, I identified the origin of this illness in the “abnormal evolution of the human brain.”
In my second book, “The Planet’s Conscious Cancer”, I explored the issue more deeply by investigating how and when the human brain, in its evolutionary path, crossed the threshold of “eco-compatibility,” that is, when it enabled the human-animal to violate the instinctive rules that until then had governed its life exactly as they governed that of all other living beings.
It should be noted that the greater “encephalization” of man compared with other animals is not disputed in any way.
It can quite safely be stated that this fact is “self-evident.”
The novelty introduced by Cancerism is that this “abnormal” development, far from having to be regarded positively, as all the theories and ideologies developed up to now have done, must instead be regarded as supremely negative, the true origin of all evils.
It is the equivalent of that genetic mutation that transforms a normal cell of any healthy tissue in the body into a cancerous cell.
That transformation, as we know, is irreversible; likewise, intelligence, once over-evolved, cannot regress. It can only drive man toward inventions and conquests increasingly aimed at expanding his hegemony over every other living being.
At this point it might seem logical to ask: why should this predominance be considered negative rather than positive?
The answer is not simple, but the issue is fundamental to understanding the real scope of cancerist theory.
Let us try to answer with another question: is over-evolved human intelligence, after having broken the balance of the biosphere to its own exclusive advantage, capable (or will it be in the future) of reconstituting a new equilibrium that allows life to survive on artificial foundations?
An intelligence capable of carrying out such a task would have to be endowed with a “processing power” far superior to that deployed by nature to create life from the primordial broth in which the first elements were left to seethe. Far superior, because nature had billions of years at its disposal to realize its construction, whereas modern man has only a handful of years left (ten, one hundred, one thousand?) to remedy a condition of imbalance that he himself has caused, with an accelerating pace century after century.
Moreover, this action of artificial restoration would have to take place in a world divided into hundreds of states, many of them at war with one another and in no way willing to let the opposing faction prevail.
More or less consciously, this is what is driving humanity in two directions:
• toward a One World Government
• toward the development of artificial intelligence.
Without the achievement of these two objectives, the biosphere would have very little hope of salvation.
Objectively, the second objective seems far more attainable than the first, which, moreover, in order to be effective, would require from the human race a rigid existential discipline.
As for artificial intelligence, it must be said that its development is consistent with the desire for omnipotence of Homo sapiens, but at the same time it also represents the clearest acknowledgment of the limits of our intelligence and of our brain’s inability to reconstitute that natural equilibrium we have destroyed.
Critical Reception
“The Limits of Intelligence floats on the confluence of science and ethics, appealing at once to the intellect and the conscience.”
“A meaningful and timely publication.”
Ernest Dempsey, Reedsy Discovery
Book Details
Series: The Planet’s Cancer — Volume V of VII
Language: English
Author: Bruno Cesare Antonio Sebastiani
Genre: Nonfiction · Environmental Thought · Philosophy · Anthropology
Available in English
The Limits of Intelligence is available in English on Amazon.
Continue the Series
P.I. Personal Index
The sixth volume changes form entirely. P.I. Personal Index is an independent work of speculative political satire set in a future world where every individual is assigned a numerical Score that determines social status, employment, privileges, and responsibility.
Rather than extending Cancerism directly, the book examines the logic of classification, administrative rationality, and technological control.
