3 February 2017
A Conceptual Overview
What is the relationship between planetary endemism and the overview effect? This is the sort of question that might be given a definitive formulation, once once we have gotten sufficiently clear in our understanding of these ideas and their ramifications. I’m not yet at the point of formulating a definitive expression of this relationship, but I’m getting closer to it, so this post will be about formulating relationships among these and related concepts in a way that is hopefully clear and illuminating, while avoiding the ambiguities inherent in novel concepts.
This post is itself a kind of overview, attempting to show in brief compass how a number of interrelated concepts neatly dovetail and provide us with a rough outline of a conceptual overview for understanding the origins, development, distribution, and destiny of civilization (or some other form of emergent complexity) in the universe.
The Stelliferous Era
The Stelliferous Era is that period of cosmological history after the formation of the first stars and before the last stars burn out and leave a cold and dark universe. In the cosmological periodization formulated by Fred Adams and Greg Laughlin, the Stelliferous Era is preceded by the Primordial Era and followed by the Degenerate Era. During the Primordial Era stars have not yet formed, but matter condenses out of the primordial soup; during the Degenerate Era, the degenerate remains of stars, black holes, and some exotic cosmological objects are to the found, but the era of brightly burning stars is over.
What typifies the Stelliferous Era is its many stars, radiating light and heat, and whose nucleosynthesis and supernova explosions forge heavier forms of matter, and therefore the chemical and minerological complexity from which later generations of (high metallicity) stars and planets will form. (A Brief History of the Stelliferous Era is an older post about the Stelliferous Era that needs to be revised and updated.)
In comparison to the later Degenerate Era, Black Hole Era, and Dark Era of cosmological history, the Stelliferous Era is rather brief, extending from 106 to 1014 years from the origins of the universe, and almost everything that concerns us can be further reduced to the eleventh cosmological decade (from 10 billion to 100 billion years since the origin of the universe). Since this cosmological periodization is logarithmic, the later periods are even longer in duration than they initially appear to be.
Our interest in the Stelliferous Era, and, more narrowly, our interest in the eleventh decade of the Stelliferous Era, does not rule out interesting cosmological events in other eras of cosmological history, and it is possible that civilizations and other forms of emergent complexity that appear during the Stelliferous Era may be able to make the transition to survive into the Degenerate Era (cf. Addendum on Degenerate Era Civilization), but this brief period of starlight in cosmological history is the Stelliferous Era window in which it is possible for peer planetary systems, peer species, and peer civilization to exist.
Planetary Endemism is the condition of life during the Stelliferous Era as being unique to planetary surfaces and their biospheres. Given the parameters of the Stelliferous Era — a universe with planets, stars, and galaxies, in which both water (cf. The Solar System and Beyond is Awash in Water) and carbon-based organic molecules (cf. Mixed aromatic–aliphatic organic nanoparticles as carriers of unidentified infrared emission features by Sun Kwok and Yong Zhang) are common — planetary surfaces are a “sweet spot” for emergent complexities, as it is on planetary surfaces that energy from stellar insolation can drive chemical processes on mineral- and chemical-rich surfaces. The chemical and geological complexity of the interface between atmosphere, ocean, and land surfaces provide an opportunity for further emergent complexities to arise, and so it is on planetary surfaces that life has its best opportunity during the Stelliferous Era.
Planetary endemism does not rule out exotic forms of life not derived from water and organic macro-molecules, nor does it rule out life arising in locations other than planetary surfaces, but the nature of the Stelliferous Era and the conditions of the universe we observe points to planetary surfaces being the most common locations for life during the Stelliferous Era. Also, the “planetary” in “planetary endemism” should not be construed too narrowly: moons, planetesimals, asteroids, comets and other bodies within a planetary system are also chemically complex loci where stellar insolation can drive further chemical processes, with the possibility of emergent complexities arising in these contexts as well.
The Homeworld Effect
The homeworld effect is the perspective of intelligent agents still subject to planetary endemism. When the emergent complexities fostered by planetary endemism rise to the level of biological complexity necessary to the emergence of consciousness, there are then biological beings with a point of view, i.e., there is something that it is like to be such a biological being (to draw on Nagel’s formulation from “What is it like to be a bat?”). The first being on Earth to open its eyes and look out onto the world possessed the physical and optical perspective dictated by planetary endemism. As biological beings develop in complexity, adding cognitive faculties, and eventually giving rise to further emergent complexities, such as art, technology, and civilization, embedded in these activities and institutions is a perspective rooted in the homeworld effect.
The emergent complexities arising from the action of intelligent agents are, like the biological beings who create them, derived from the biosphere in which the intelligent agent acts. Thus civilization begins as a biocentric institution, embodying the biophilia that is the cognitive expression of biocentrism, which is, in turn, an expression of planetary endemism and the nature of the intelligent agents of planetary endemism being biological beings among other biological beings.
The homeworld effect does not rule out the possibility of exotic forms of life or unusual physical dispositions for life that would not evolve with the homeworld effect as a selection pressure, but given that planetary endemism is the most likely existential condition of biological beings during the Stelliferous Era, it is to be expected that the greater part of biological beings during the Stelliferous Era are products of planetary endemism and so will be subject to the homeworld effect.
The Overview Effect
The overview effect is a consequence of transcending planetary endemism. As biocentric civilizations increase in complexity and sophistication, deriving ever more energy from their homeworld biosphere, biocentric institutions and practices begin to be incrementally replaced by technocentric institutions and practices and civilization starts to approximate a technocentric institution. The turning point in this development is the industrial revolution.
Within two hundred years of the industrial revolution, human beings had set foot on a neighboring body of our planetary system. If a civilization experiences an industrial revolution, it will do so on the basis of already advancing scientific knowledge, and within an historically short period of time that civilization will experience the overview effect. But the unfolding of the overview effect is likely to be a long-term historical process, like the scientific revolution. Transcending planetary endemism means transcending the homeworld effect, but as the homeworld effect has shaped the biology and evolutionary psychology of biological beings subject to planetary endemism, the homeworld effect cannot be transcended as easily as the homeworld itself can be transcended.
For biological beings of planetary endemism, the overview effect occurs only once, though its impact may be gradual and spread out over an extended period of time. An intelligent agent that has evolved on the surface of its homeworld leaves that homeworld only once; every subsequent world studied, explored, or appropriated (or expropriated) by such beings will be first encountered from afar, over astronomical distances, and known to be a planet among planets. A homeworld is transcended only once, and is not initially experienced as a planet among planets, but rather as the ground of all being.
The uniqueness of the overview effect to the homeworld of biological beings of planetary endemism does not rule out further overview effects that could be experienced by a spacefaring civilization, as it eventually is able to see its planetary system, its home galaxy, and its supercluster as isolated wholes. However, following the same line of argument above — stars and their planetary systems being common during the Stelliferous Era, emergent complexities appearing on planetary surfaces characterizing planetary endemism, organisms and minds evolving under the selection pressure of the homeworld effect embodying geocentrism in their sinews and their ideas — it is to be expected that the overview effect of an intelligent agent first understanding, and then actually seeing, its homeworld as a planet among other planets, is the decisive intellectual turning point.
Bifurcation of Planetary and Spacefaring Civilizations
What I have tried to explain here is the tightly-coupled nature of these concepts, each of which implicates the others. Indeed, the four concepts outlined above — the Stelliferous Era, planetary endemism, the homeworld effect, and the overview effect — could be used as the basis of a periodization that should, within certain limits, characterize the emergence of intelligence and civilization in any universe such as ours. Peer civlizations would emerge during the Stelliferous Era subject to planetary endemism, and passing from the homeworld effect to the overview effect.
If such a civilization continues to develop, fully conscious of the overview effect, it would develop as a spacefaring civilization evolving under the (intellectual) selection pressure of the overview effect, and such a civilization would birfurcate significantly from civilizations of planetary endemism still exclusively planetary and still subject to the homeworld effect. These two circumstances represent radically different selection pressures, so that we would expect spacefaring civilizations to rapidly speciate and adaptively radiate once exposed to these novel selection pressures. I have previously called this speciation and adaptive radiation the great voluntaristic divergence.
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● The Scientific Imperative of Human Spaceflight
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6 October 2016
A biological being among biological beings
A human being is a being among beings, and moreover a biological being among biological beings. We come to an awareness of ourselves, and of what we are, in a biological context. Biophilia, then, is a default consequence of being biological and finding oneself in a biological content; biophilia is a cognitive bias of biological beings. (Previously I considered the relationship between our biological nature and our biological bias in Biocentrism and Biophilia.) From both our biocentrism and our biophilia follows biocentric civilization, which I formulated in terms of the biocentric thesis, so it is natural that I would next attempt to formulate a technocentric thesis, as I have often contrasted biocentric and technocentric conceptions.
Until quite recently there was no possibility of pursing a non-biophilic bent, i.e., of pursuing a technocentric bent. Over the past several thousand years of human civilization, individual human beings had a limited opportunity to immerse themselves into the human world of civilization, and this civilization has been predominantly and pervasively biocentric. Since the Industrial Revolution, however, after which both agriculturalism and pastoralism became economically marginal, and the adoption of technology greatly increased, the ability to separate oneself from biocentric institutions has increased proportionately, but the individual has remained himself a biological being, tied to the biological world through existential needs for personal sustenance. Thus our being biological has repeatedly brought us back to our biological origins. If civilization were to fail, we could still return to an almost exclusively biocentric context and — at least for those who survived this traumatic transition — life would go on.
The emergence of a technological milieu following the industrial revolution suggests the possibility of a technocentric civilization that is the successor to biocentric civilization. Indeed, we may even understand the emergence of a fully technocentric civilization as the telos of industrialized civilization. We can formulate this in greater generality, as this process may hold for any civilization whatsoever that originates as a civilization of planetary endemism and makes the transition to a technological civilization.
Should the intelligent (biological) agents that build a civilization cease to be biological and become, for example, technological instead of biological, over time those intelligent agents could grow apart from their biocentric origins, and the social institutions in which these intelligent agents participate will become increasingly less biocentric. Biocentricity, then, is a function of biological origins, i.e., biocentrism is a consequence of being biological (as I put it in The Biocentric Thesis), and biophilia is an expression of biocentricity. As a technological civilization grows away from its biocentric origins, it is likely to become less biophiliac over time, which will in turn allow for greater expression of technophilia.
An explicit formulation of the technocentric thesis
Let us try to give these ideas a more explicit formulation:
The Technocentric Thesis
Any fully technocentric civilization has evolved from a previous biocentric civilization by descent with modification.
…which implies its corollary formulated in the negative…
No civilization originates as a technocentric civilization.
By a “biocentric civilization” I mean a civilization that exemplifies the biocentric thesis. I have formulated a strong biocentric thesis (all civilizations in our universe begin as biocentric civilizations originating on planetary surfaces) and a weak biocentric thesis (all civilizations during the Stelliferous Era begin as biocentric civilizations originating on planetary surfaces), each of which has a corollary formulated in the negative. The technocentric thesis could also be given strong and weak formulations, e.g., all technocentric civilizations in our universe evolve from biocentric civilizations (strong) and all technocentric civilizations during the Stelliferous Era evolve from biocentric civilizations (weak). The weaker formulation is in each case constrained by temporal parameter while the stronger formulation is unconstrained.
The mechanism by which a technocentric civilization evolves from a biocentric civilization I call replacement, and replacement can be formulated as the replacement thesis:
The Replacement Thesis
All technocentric civilizations begin as biocentric civilizations and are transformed into technocentric civilizations through the replacement of biological constituents with technological constituents.
This in turn implies a negative formulation as its corollary:
Replacement Thesis Corollary
No technocentric civilization originates as a technocentric civilization, but emerges by replacement from a biocentric civilization of planetary endemism.
How far can replacement go? We can already see in our own industrialized civilization partial replacement, but can there be a complete replacement of biological constituents by technological constituents? For any civilizations originating in intelligent biological organisms, it is unlikely that living organisms could ever be completely eliminated, but they may be rendered superfluous for all practical purposes (i.e., superfluous to civilization).
The argument from consciousness
It would be possible to construct a scenario in which biology can never be completely eliminated as a constituent of civilization. Consider the following scenario, which I will call the argument from consciousness, based on the indispensability of consciousness to civilization and the unknown parameters of machine consciousness.
The Argument from Consciousness
I will assume that there is such a thing as consciousness, that human beings are conscious at least some of the time, and that this human consciousness plays a significant role in human existence and in the civilizations built by human beings. (It is necessary to make these rudimentary stipulations because it is not unusual to find consciousness dismissed, or called an “illusion,” or to see its role in the world minimized or marginalized.)
The view is prevalent, perhaps even dominant, in AI circles such that anything that can pass the Turing test must be called conscious. There is a degree of mutual reinforcement between this common view among AI researchers and the tacit positivism that continues to influence the development of contemporary science, which consigns consciousness of the sphere of metaphysics and thus rules out in principle any metaphysical entity that is consciousness. I will not here attempt to make a case for consciousness as a metaphysical entity, but I will assume, for the purposes of what follows, that a principled refusal to consider consciousness is a barrier to understanding human behavior, including the behavior of building civilizations.
Since we do not yet know what consciousness is, and we cannot produce a scientific account of consciousness, we do not know what the conditions of consciousness are. If we had a scientific theory of consciousness that allowed us to quantify consciousness by taking meaningful measures of consciousness, any putative consciousness, whether generated by a mechanism or by biology, natural or modified or fully synthetic, could be tested by such measures of consciousness and objectively determined to be conscious or not. We do not as yet possess any such science, nor can we take any such measurements.
Human and animal consciousness constitute existence proofs of the possibility of consciousness arising by natural means, and thus consciousness ought to be amenable to study by methodological naturalism, and also to replication. It is possible that consciousness can only be produced by biological means, i.e., it is possible that machine consciousness cannot be generated. The existence proof of consciousness provided by biological beings is not an existence proof of machine consciousness. Now, I personally think that machine consciousness will eventually come about, but we will not know that this is possible until it has been achieved.
Even if machine consciousness is impossible, it would still be possible to engineer consciousness by biological means, employing some variation on existing biological substrates of consciousness, or producing consciousness by way of synthetic or artificial biology. In this case, a civilization (or post-civilizational social institution) that preserves consciousness, or desires to preserve consciousness, will not be able to become purely technocentric in the sense of entirely eliminating biology, though the biology that is retained may be entirely subordinated to technical means and technical institutions. A civilization that retained consciousness through such biological means, but entirely within a technocentric context, could be called a technocentric civilization in which biology was ineradicable.
The argument from consciousness is merely an argument (and not a proof of anything), because the same absence of a science of consciousness that would allow us to take objective measures of consciousness is the absence of a science that would make it possible to prove either that consciousness can inhere in different kind of substrates (biological or mechanical, for example), or that consciousness can only be generated through biological means. Until we have a science of consciousness, we can advance this line of argumentation only through existence proofs, i.e., proofs of concept.
Even then, even given building a conscious machine, without a science of consciousness we would have no way to rigorously and objectively compare and contrast human consciousness with machine consciousness. One way to resolve this dilemma is the Turing test, as noted above, but no one who has any degree of scientific curiosity could be satisfied with cutting the Gordian knot of consciousness rather than unraveling it.
One of the virtues of explicitly formulating one’s ideas as theses (or as arguments), as in the above, is that one can then turn to the explicit criticism of these theses, especially to the task of unpacking the assumptions embedded in the theses. Another virtue of explicit formulations is that they can be explicitly falsified. The existence of a civilization not derived from biological complexity emergent on a planetary surface would falsify the biocentric thesis.
These explicit formulations, then, are not be taken as definitive formulations. I do not consider the biocentric thesis, the technocentric thesis, or the replacement thesis to be in any sense definitive, but rather to be a point of departure in an analysis of the nature of civilization taken in its broadest signification and extrapolated to a cosmological scale. Thus I hope to return to each of these theses in order to tease out their assumptions in order to analytically approach the intuitive conception of civilization with which I began.
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27 July 2016
In The Biocentric Thesis I gave an explicit formulation of the idea that civilizations of the Stelliferous Era originate in the actions of biological agents — actually, I gave two formulations, a weak and a strong, each with a corollary. What I failed to explicitly note in that post was that, in explicitly formulating the biocentric thesis, the idea of biocentricity is not confined to describing the biocentric thesis. In other words, we can identify as “biocentric” some state-of-affairs (presumably a civilization, or, more narrowly, an institution) regardless whether this state-of-affairs exemplifies the biocentric thesis. Thus the concept of the biocentric has a much wider scope than the biocentric thesis specifically.
It is worthwhile to make this distinction because the biocentric thesis is a particular idea about the origin of civilization (an extrapolation of Darwin’s thesis to astrobiological scope) while the idea of the biocentric, being of greater scope, has much wider applicability. If the biocentric thesis is true, that is to say, if all civilizations during the Stelliferous Era begin as biocentric civilizations originating on planetary surfaces (or, in its strong form, if all civilizations in our universe begin as biocentric civilizations originating on planetary surfaces), then biocentrism is not merely a feature of the human condition, it is the condition from which any and all civilizations originate (i.e., it is the common condition of eocivilization).
What is the human relationship to biocentrism beyond a narrowly conceived biocentric thesis on the origins of civilization? In my post Astrobiology Thought Experiment I wrote:
“…I have been trying to get at the human affinity to the rest of life on Earth, and trying to get at it in a primarily visceral sense in order to get around the hopeless tangle of rationalization and cognitive bias that we have painstakingly erected around the idea of humanity.”
What I called “the human affinity for the rest of life on Earth” is also known as biophilia. E. O. Wilson’s initial exposition of the idea of biophilia defined the term as meaning, “…the innate tendency to focus on life and lifelike processes.” This appears on the very first page of his book Biophilia. Elsewhere, in his book The Diversity of Life, Wilson has defined biophilia as, “…the connections that human beings subconsciously seek with the rest of life.”
In formulating the idea of biophilia Wilson already anticipated the extrapolation of biophilia beyond terrestrial life. (Though Wilson’s term biophilia has rapidly gained currency and has been widely discussed, his original vision embracing a biophilia not limited to Earth has not enjoyed the same level of interest.) Also on the first page of Biophilia is this brief reflection on extraterrestrial life:
“From infancy we concentrate happily on ourselves and other organisms. We learn to distinguish life from the inanimate and move toward it like moths to a porch light. Novelty and diversity are particularly esteemed; the mere mention of the word extraterrestrial evokes reveries about still unexplored life, displacing the old and once potent exotic that drew earlier generations to remote islands and jungled interiors.”
Wilson, E. O., Biophilia: the Human Bond with Other Species, Cambridge and London: Harvard University Press, 2003, p. 1.
It seems likely that we would naturally extrapolate both our biophilic and biophobic reactions to any extraterrestrial life we may find. However, it is also likely that, in our encounters with extraterrestrial life in the future, there may be instances in which we cannot as clearly distinguish between the animate and the inanimate as we can with terrestrial life. Our biophilic intuitions may need to be educated and augmented if they are to applied beyond terrestrial life, just as our mathematical intuitions are educated and augmented when we learn advanced mathematical concepts that were no part of our intuitive endowment of mathematical knowledge (we can cite geometrical intuition as an instance of the latter). Unlike the example of educating our mathematical intuitions, however, we cannot educate and augment our biophilic and biophobic reactions without actually traveling to other biospheres and learning directly about other lifeforms, preferably in their native habitats. In other words, progress in biology is ultimately predicated upon progress in space travel. This is implicit in the very idea of astrobiology.
An interest in life as yet unexplored implies the possibility of xenophilia as a special case of biophilia. Wilson seems to unproblematically assume that this is the case, but I have regarded this as an open question. For example, in Terrestrial Bias: Thought Experiments I wrote:
“Is life itself, regardless of its origins, of value to our biophilic minds, or are our anthropogenic minds so focused on differential survival and reproduction of homo sapiens that life itself is an abstract idea that can find no purchase in our sentiments? How far does biophilia extend? Is biophilia really only terrestrial biophilia? Is xenophilia possible for terrestrially evolved minds?”
We can we a bit more systematic about this: we can distinguish between biophilia in a narrow sense and biophilia in an extended sense, and the meaning of biophilia can be extended in more than one way. Biophilia in its narrowest sense is the affinity that human beings have for other terrestrial life. The generalization of this narrow sense of biophilia would be human affinity for all life, wherever that life may be found (as implied by E. O. Wilson). The formalization of the narrow sense of biophilia would be the affinity that any intelligent agent would feel for the biota of its homeworld, and from this formalizaton we can deduce the possibility of a particular intelligent species with its affinity for its particular homeworld (and this is a distinct concept than the purely formal concept of any species’ affinity for its homeworld). The formalization of the generalization of human biophilia would be affinity that any intelligent biological being would have for any life to be found in the universe. These are the permutations of biophilia, and each permutation may be regarded as an open question inviting further research.
Biophilia in the extended sense of the formalization of human biophilia (the affinity that any biological being would have for the biota of its homeworld) can be taken as a foundational posit of cognitive astrobiology, as predictable in shaping minds as natural selection is predictable in shaping bodies. Biophilia is the cognitive expression of biocentrism, and in so far as biocentrism is likely to typify any intelligent biological being, any intelligent biological being is likely to embody the same kind of biophilia found among human beings. In this sense, biophilia is a central phenomenon of cognitive astrobiology.
However, we can also posit that any intelligent agent that builds a technological civilization, and eventually a spacefaring civilization by technological means, will have, to some degree, marginalized native biophilia to the extent that this is necessary in order for a class of persons in this civilization to be fully immersed in a technological milieu. I take this latter condition to be a sine qua non of the development of advanced technological capabilities; perhaps this idea — i.e., the idea of at least one class of persons under the umbrella of a larger society to be immersed in a technological milieu — demands independent analysis and exposition. This I will reserve for a future post.
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19 July 2016
The Centrality of Biology to Civilization
Beyond the formulation of the biological conception of civilization and the ecological conception of civilization, both of which employ concepts from biology, we can identify a particular thesis (or particular theses) addressing the centrality of biological relationships and biological entities to civilization (as we have known civilization to date). I have expressed the centrality of biology to civilization as the biocentric thesis.
Although I have not previously formulated the biocentric thesis explicitly (here I will attempt to do this) though I have used the idea many times. Previously I wrote about biocentric civilizations in From Biocentric Civilization to Post-biological Post-Civilization, Addendum on the Stages of Civilization, and Another Way to Think about Civilization, inter alia, without attempting to clarify my use of “biocentric,” while in The Biological Conception of Civilization and The Ecological Conception of Civilization I considered biologically-derived conceptions of civilization.
On Being Biological
Let us begin with the basics: human beings, the progenitors of terrestrial civilization, are biological. Being ourselves biological entities, human life has been integral with the biological world from which it arose. We live by consuming other biological entities, and, when we die, our bodies decompose and their constituents are reintegrated with the biological world from which we sprang. When human beings began the civilizational project, we remained integral with the biological world, exapting it for our new-found purposes, which involved the tightly-coupled coevolutionary cohort of species that I employed as the biological conception of civilization. In western thought it as been traditional to oppose nature to culture, but, being biological, we understand our civilization by understanding ourselves, and we understand ourselves by understanding biology.
Biology is both an old and a young science. Plato had little use for biology, and in reading Plato’s dialogues one could be forgiven for supposing that the Greeks had ever lived in any condition other than a civilization in which nature is kept at a certain distance. Aristotle, on the contrary, was a careful observer of nature, thus we may say that biology as science goes back at least to Aristotle’s treatises The History of Animals, On the Parts of Animals, On the Motion of Animals, and On the Gait of Animals.
Biology in its contemporary form goes back to Darwin, from which time biology has rapidly advanced and is today a mature science, as sophisticated in its own way as particle physics. And while we do not usually think of the growing rigor and sophistication of a body of scientific knowledge as an exercise in introspection, in the case of biology we can think of it in this way — if only we have the hardihood to apply what we have learned from biology to ourselves and to our biologically-based civilization. Because we are biological beings, knowledge of biology is knowledge of ourselves.
Being Biological in an Astrobiological Context
Astrobiology is a very young science, but in so far as it takes up the torch of biology and extrapolates biological concepts to their ultimate cosmological context, astrobiology is simply a greatly expanded biology, and in this sense not a new science at all. In From an Astrobiological Point of View I characterized the emergence of astrobiology in this spirit of continuity as the fourth of four great revolutions in biology, the previous three revolutions being Darwinism, Mendelian genetics, and evolutionary developmental biology (better known as “evo-devo”).
In the context of astrobiology, understanding the conditions for life in the universe is a greatly expanded form of human introspection, in which an evolving body of scientific knowledge has the capability of demonstrating the cosmological context of human life. Once again, in understanding astrobiology we can better understand ourselves, if only we have the willingness to understand ourselves scientifically. Beyond understanding ourselves, astrobiology also holds the promise of better understanding our civilization. An astrobiological formulation of the biological conception of civilization would extrapolate this conception of civilization to a cosmological scope.
In Astrobiology is island biogeography writ large I suggested that spaceflight is to astrobiology as flight is to biogeography, which is an application of the principle that technology is the pursuit of biology by other means. Given technologically-enabled spaceflight (made possible by a technological civilization), terrestrial life can expand beyond Earth and beyond our planetary system to other worlds, just as the innovation of flight made it possible for terrestrial organisms (even those that do not fly) to establish themselves on distant, isolated islands — hence the analogy between biogeographical distribution patterns and astrobiological distribution patterns. This is still a biocentric paradigm, but extrapolated to cosmological scope.
With these considerations of what it means to be a biological being in an astrobiological context, I will attempt an explicit formulation of weak and strong biocentric theses. All of these formulations involve what I have earlier called planetary endemism.
The Weak Biocentric Thesis
All civilizations during the Stelliferous Era begin as biocentric civilizations originating on planetary surfaces.
This thesis is “weak” because it addresses only civilizations during the Stelliferous Era. A corollary of the weak biocentric thesis excludes the possibility of any Stelliferous Era civilization that does not arise from biology, as follows:
Corollary of the Weak Biocentric Thesis
No civilizations during the Stelliferous Era existed prior to the advent of Stelliferous Era biota.
The weak biocentric thesis and its corollary implies a strong biocentric thesis, not limited to the Stelliferous Era:
The Strong Biocentric Thesis
All civilizations in our universe begin as biocentric civilizations originating on planetary surfaces.
The strong biocentric thesis also has a strong corollary:
Corollary of the Strong Biocentric Thesis
No civilizations existed in our universe prior to the biocentric civilizations of Stelliferous Era.
Both strong and weak biocentric theses and their corollaries entail that the emergent complexity of civilization arises from the previous emergent complexity of life, and, in their strongest formulations, that it could be no other way. This excludes the possibility that there exist forms of emergent complexity other than life — sufficiently distinct from life as we know it than any identification of this emergent complexity as life would be problematic — from which civilization might independently arise. This is a rather sweeping claim, and, though it is supported by our parochial knowledge of life and civilization on Earth, it would be quite a stretch to assert this for the universe entire. On the other hand, we would still want to entertain this possibility, as there may be universes in which the only emergent complexity upon which civilization can supervene is life, more or less as we know it.
If the Strong Biocentric Thesis and its corollary are true, then there are no pre-Stelliferous Era civilizations, and all post-Stelliferous Era civilizations are derived from Stelliferous Era civilizations having their origins in planetary endemism. Post-Stelliferous Era civilizations would include Degenerate Era civilizations, Black Hole Era civilizations, and Dark Era civilizations. This might be formulated as another thesis in turn.
According to this understanding of civilization, the Stelliferous Era is uniquely generative of civilizations. In so far as we understand civilizations to belong to a suite of emergent complexities, we might say instead that the Stelliferous Era is uniquely generative of emergent complexity. At least, we say that now, prior to the emergent complexities unique to the Degenerate Era. It seems likely, however, that at some point the universe will reach peak complexity, and after that point it will begin to decay, and emergent complexities will begin to disappear, one by one.
The Terrestrial Eocivilization Hypothesis and Darwin’s Thesis
The above is closely related to what I have previously called the Terrestrial Eocivilization Hypothesis, which I characterized as follows:
“I will call the terrestrial eocivilization hypothesis the position that identifies early civilization, i.e., eocivilization, with terrestrial civilization. In other words, our terrestrial civilization is the earliest civilization to emerge in the cosmos. Thus the terrestrial eocivilization hypothesis is the civilizational parallel to the rare earth hypothesis, which maintains, contrary to the Copernican principle, that life on earth is rare. I could call it the ‘rare civilization hypothesis’ but I prefer ‘terrestrial eocivilization hypothesis’.”
This might, more simply, be called the “priority thesis,” and is to be distinguished from the “uniqueness thesis,” i.e., that there is one and only one civilization in the universe, and that one is terrestrial civilization. Thinking over this again in retrospect, I realize that priority, uniqueness, and biocentricity can be distinguished. A civilization might be unique in virtue of being first (i.e., having priority), or by being the only civilization, or by being the last of all civilizations. Thus priority is only one form of uniqueness among others. And priority and uniqueness can both be distinguished from biocentricity: according the biocentric theses above, biocentric civilization has priority (at least during the Stelliferous Era) but it not necessarily unique in the universe, nor unique to Earth. Terrestrial civilization is a biocentric civilization, and it may also have priority and it may be unique.
The biocentric theses are also related to what I have called Darwin’s Thesis on the Origins of Civilization, according to which civilization emerges from non-civilization, much as naturalistic accounts of life hold that life emerges from non-life (sometimes called abiogenesis). Whereas the priority thesis (i.e., the terrestrial eocivilization hypothesis, that the earliest civilization is terrestrial civilization) is specific to Earth, Darwin’s thesis, like the biocentric theses above, can be applied universally without reference to the historical accidents of civilization on Earth (including its emergence, and whether this emergence was earlier than or later than any other emergence of civilization).
From a scientific standpoint, then, it is more important to determine the exact logical relationships between the biocentric theses and Darwin’s thesis, as the details of what happened on Earth belong to the accidents of cosmological history. As I said in my post on Darwin’s thesis, these ideas about civilization are rudimentary in the extreme, but since a science of civilization does not yet exist, we must begin with these simplest of concepts if we are ever to think clearly about civilization.
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