Tag Archives: Fermi Paradox

Grow Or Collapse: Stasis Is Not a Long-Term Option

18 Wednesday Jan 2023

Posted by in Climate, Environment, Growth

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Growth is a human imperative and a good thing in every sense. We’ve long heard from naysayers, however, that growth will exhaust our finite resources, ending in starvation and the collapse of human civilization. They say, furthermore, that the end is nigh! It’s an old refrain. Thomas Malthus lent it credibility over 200 years ago (perhaps unintentionally), and we can pick on poor Paul Ehrlich’s “Population Bomb” thesis as a more modern starting point for this kind of hysteria. Lewis M. Andrews puts Ehrlich’s predictions in context:

“A year after the book’s publication, Ehrlich went on to say that this ‘utter breakdown’ in Earth’s capacity to support its bulging population was just fifteen years away. … For those of us still alive today, it is clear that nothing even approaching what Ehrlich predicted ever happened. Indeed, in the fifty-four years since his dire prophesy, those suffering from starvation have gone from one in four people on the planet to just one in ten, even as the world’s population has doubled.”

False Limits

The “limits” argument comes from the environmental Left, but it creates for them an uncomfortable tradeoff between limiting growth and the redistribution of a fixed (they hope) or shrinking (more likely) pie. That’s treacherous ground on which to build popular support. It’s also foolish to stake a long-term political agenda on baldly exaggerated claims (and see here) about the climate and resource constraints. Ultimately, people will recognize those ominous forecasts as manipulative propaganda.

Last year, an academic paper argued that growing civilizations must eventually reach a point of “asymptotic burnout” due to resource constraints, and must undergo a “homeostatic awakening”: no growth. The authors rely on a “superlinear scaling” argument based on cross-sectional data on cities, and they offer their “burnout” hypothesis as an explanation for the Fermi Paradox: the puzzling quiet we observe in the universe while we otherwise expect it to be teeming with life… civilizations reach their “awakenings” before finding ways to communicate with, or even detect, their distant neighbors. I addressed this point and it’s weaknesses last year, but here I mention it only to demonstrate that the “limits to growth” argument lives on in new incarnations.

Growth-limiting arguments are tenuous on at least three fundamental grounds: 1) failure to consider the ability of markets to respond to scarcity; 2) underestimating the potential of human ingenuity not only to adapt to challenges, but to invent new solutions, exploit new resources, and use existing resources more efficiently; and 3) homeostasis is impossible because zero growth cannot be achieved without destructive coercion, suspension of cooperative market mechanisms, and losses from non-market (i.e., political and non-political) competition for the fixed levels of societal wealth and production.

The zero-growth world is one that lacks opportunities and rewards for honest creation of value, whether through invention or simple, hard work. That value is determined through the interaction of buyers and sellers in markets, the most effective form of voluntary cooperation and social organization ever devised by mankind. Those preferring to take spoils through the political sphere, or who otherwise compete on the basis of force, either have little value to offer or simply lack the mindset to create value to exchange with others at arms length.

Zero-Growth Mentality

As Robert Colvile writes in a post called “The Morality of Growth”:

“A society without growth is not just politically far more fragile. It is hugely damaging to people’s lives – and in particular to the young, who will never get to benefit from the kind of compounding, increasing prosperity their parents enjoyed.”

Expanding on this theme is commenter Slocum at the Marginal Revolution site, where Colvile’s essay was linked:

“Humans behave poorly when they perceive that the pie is fixed or shrinking, and one of the main drivers for behaving poorly is feelings of envy coming to the forefront. The way we encourage people not to feel envy (and to act badly) is not to try to change human nature, or ‘nudge’ them, but rather to maintain a state of steady improvement so that they (naturally) don’t feel envious, jealous, tribal, xenophobic etc. Don’t create zero-sum economies and you won’t bring out the zero-sum thinking and all the ills that go with it.”

And again, this dynamic leads not to zero growth (if that’s desired), but to decay. Given the political instability to which negative growth can lead, collapse is a realistic possibility.

I liked Colville’s essay, but it probably should have been titled “The Immorality of Non-Growth”. It covers several contemporary obstacles to growth, including the rise of “stakeholder capitalism”, the growth of government at the expense of the private sector, strangling regulation, tax disincentives, NIMBYism, and the ease with which politicians engage in populist demagoguery in establishing policy. All those points have merit. But if his ultimate purpose was to shed light on the virtues of growth, it seems almost as if he lost his focus in examining only the flip side of the coin. I came away feeling like he didn’t expend much effort on the moral virtues of growth as he intended, though I found this nugget well said:

“It is striking that the fastest-growing societies also tend to be by far the most optimistic about their futures – because they can visibly see their lives getting better.”

Compound Growth

A far better discourse on growth’s virtues is offered by Veronique de Rugy in “The Greatness of Growth”. It should be obvious that growth is a potent tonic, but its range as a curative receives strangely little emphasis in popular discussion. First, de Rugy provides a simple illustration of the power of long-term growth, compound growth, in raising average living standards:

This is just a mechanical exercise, but it conveys the power of growth. At 2% real growth, real GDP per capital would double in 35 years and quadruple in 70 years. At 4% growth, real GDP would double in 18 years… less than a generation! It would quadruple in 35 years. If you’re just now starting a career, imagine nearing retirement at a standard of living four times as lavish as today’s senior employees (who make a lot more than you do now). We’ll talk a little more about how such growth rates might be achieved, but first, a little more on what growth can achieve.

The Rewards of Growth

Want to relieve poverty? There is no better and more permanent solution than economic growth. Here are some illustrations of this phenomenon:

Want to rein-in the federal budget deficit? Growth reduces the burden of the existing debt and shrinks fiscal deficits, though it might interfere with what little discipline spendthrift politicians currently face. We’ll have to find other fixes for that problem, but at least growth can insulate us from their profligacy.

And who can argue with the following?

“All the stuff an advocate anywhere on the political spectrum claims to value—good health, clean environment, safety, families and quality of life—depends on higher growth. …

There are other well-documented material consequences of modern economic growth, such as lower homicide rates, better health outcomes (babies born in the U.S. today are expected to live into their upper 70s, not their upper 30s as in 1860), increased leisure, more and better clothing and shelter, less food insecurity and so on.”

De Rugy argues convincingly that growth might well entail a greater boost in living standards for lower ranges of the socioeconomic spectrum than for the well-to-do. That would benefit not just those impoverished due to a lack of skills, but also those early in their careers as well as seniors attempting to earn extra income. For those with a legitimate need of a permanent safety net, growth allows society to be much more generous.

What de Rugy doesn’t mention is how growth can facilitate greater saving. In a truly virtuous cycle, saving is transformed into productivity-enhancing additions to the stock of capital. And not just physical capital, but human capital through investment in education as well. In addition, growth makes possible additional research and development, facilitating the kind of technical innovation that can sustain growth.

Getting Out of the Way of Growth

Later in de Rugy’s piece, she evaluates various ways to stimulate growth, including deregulation, wage and price flexibility, eliminating subsidies, less emphasis on redistribution, and simplifying the tax code. All these features of public policy are stultifying and involve dead-weight losses to society. That’s not to deny the benefits of adequate state capacity for providing true public goods and a legal and judicial system to protect individual rights. The issue of state capacity is a major impediment to growth in the less developed world, whereas countries in the developed world tend to have an excess of state “capacity”, which often runs amok!

In the U.S., our regulatory state imposes huge compliance costs on the private sector and effectively prohibits or destroys incentives for a great deal of productive (and harmless) activity. Interference with market pricing stunts growth by diverting resources from their most valued uses. Instead, it directs them toward uses that are favored by political elites and cronies. Subsidies do the same by distorting tradeoffs at a direct cost to taxpayers. Our system of income taxes is rife with behavioral distortions and compliance costs, bleeding otherwise productive gains into the coffers of accountants, tax attorneys, and bureaucrats. Finally, redistribution often entails the creation of disincentives, fostering a waste of human potential and a pathology of dependence.

Growth and Morality

Given the unequivocally positive consequences of growth to humanity, could the moral case for growth be any clearer? De Rugy quotes Benjamin Friedman’s “The Moral Consequences of Economic Growth”:

“Growth is valuable not only for our material improvement but for how it affects our social attitudes and our political institutions—in other words, our society’s moral character, in the term favored by the Enlightenment thinkers from whom so many of our views on openness, tolerance and democracy have sprung.”

De Rugy also paraphrases Tyler Cowen’s position on growth from his book “Stubborn Attachments”:

“… economic growth, properly understood, should be an essential element of any ethical system that purports to care about universal human well-being. In other words, the benefits are so varied and important that nearly everyone should have a pro-growth program at or near the top of their agenda.”

Conclusion

Agitation for “degrowth” is often made in good faith by truly frightened people. Better education would help them, but our educational establishment has been corrupted by the same ignorant narrative. When it comes to rulers, the fearful are no less tyrannical than power-hungry authoritarians. In fact, fear can be instrumental in enabling that kind of transformation in the personalities of activists. A basic failing is their inability to recognize the many ways in which growth improves well-being, including the societal wealth to enable adaptation to changing conditions and the investment necessary to enhance our range of technological solutions for mitigating existential risks. Not least, however, is the failure of the zero-growth movement to understand the cruelty their position condones in exchange for their highly speculative assurances that we’ll all be better off if we just do as they say. A terrible downside will be unavoidable if and when growth is outlawed.

New Theory: Great Woke Filter Conceals Life In the Cosmos

03 Friday Jun 2022

Posted by in Central Planning, Extraterrestrial Life, Space Travel

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A recent academic paper seeks to explain the Fermi Paradox by asserting that all civilizations must either collapse or reach a point of homeostasis. The paper cites tensions between population growth, resource scarcity, limits to technical innovation, and ultimately political resistance to growth. The Fermi Paradox (FP) is the observation that by now, we should have detected or heard from an alien civilization if the universe has so much potential for intelligent life. But if those civilizations fail to advance beyond a certain level, they don’t develop the technical prowess to explore outside their own stellar neighborhoods or even become detectable from great distances.

The new paper, by Michael L. Wong and Stuart Bartlett (WB), says these outcomes might be the result of “asymptotic burnout” — followed by either civilizational collapse or a “homeostatic awakening”. Never has “get woke, go broke” been so palpable! Certain sections of the WB paper read like an encyclopedia of leftist apocalyptic speculation, dressed up in mathematics and assumed to generalize to any civilization of intelligent beings in the universe. The incredible vastness of outer space suggests that it might never be possible for us to detect these kinds of homebound, low-tech civilizations, whether constrained by scarcities and moribund technologies or hamstrung by their own politics. Similarly, they might not be able to detect us.

Great Filters

There are other, similar explanations of FP. All of those fall under the heading of “Great Filters”, and I’m not sure WB have come up with anything new in that regard except for the “woke” spin. Great filters can be extinction events, such as intra-planetary hostilities culminating in the reckless use of weapons of mass destruction. Or unfortunate collisions with massive asteroids, which are a matter of time. Malthusian outcomes have been discussed in the context of great filters as well. In the past, I’ve discussed the limitations imposed by collectivist social structures on a civilization’s potential to achieve interstellar travel. I’m not the only one. The kind of “awakening” posited by WB would certainly demand the centralization of economic decision-making, though they envision conditions under which the “awakening” is a rational and enlightened decision.

Grabby Civilizations

A bit of a digression here: one of the most interesting explanations for FP that I’ve heard is from economist Robin Hanson and several co-authors. Hanson, by the way, wrote the original paper on great filters. His more recent insight is the likelihood of an earth-bound selection bias: there must be reasons why we haven’t seen alien activity in earth’s backward light cone, assuming they exist. The light cone defines an area of space-time we have observed, or could have observed had we been looking. To have been within our light cone, an event coordinate’s distance from us in space must have been less than or equal to the time it takes for its light to arrive here. For example, we can see what happened on the surface of the Sun fifteen minutes ago because at the Sun’s distance, it takes just ten minutes for its light to reach us. However, an event on the Sun that occurred five minutes ago is still outside our backward light cone. Likewise, if a star is 100,000 light years away, we cannot see events that occurred there within the past 99,999 years.

Hanson and his co-authors focus on the timescales and “hard steps”, or critical evolutionary transitions, necessary for intelligent life to develop in a solar system. They construct a probability model suggesting that the birth of human civilization was likely on the early end of the time distribution of civilizational beginnings in the universe. That means there probably aren’t many distant civilizations we could possibly have seen in our light cone. We’d be more likely to detect them if they are sufficiently advanced to be so-called “grabby” civilizations, but that kind of technological development takes a long time. “Grabby” civilizations (or their machines) are capable of expanding their reach across the stars at high speed, some significant fraction of the speed of light. They can be expected to visibly alter the volume of space they control by settling, mining, building large structures, etc…. An interesting (and perhaps counterintuitive) result is that the faster such a civilization expands, the less likely we’d have seen them in our backward light cone. And we haven’t, which argues for a higher speed of alien conquest, all else equal.

In another post, Hanson estimates that the time until we meet another grabby civilization centers on about 1 billion years if we expand. So grabby civilizations are quite rare if they exist. That doesn’t rule out the possibility that we might detect or encounter a much less technically advanced civilization. Nevertheless, Hanson strongly believes in the reality of Great Filters and believes that human civilization is likely to encounter certain filters that we cannot even anticipate.

The explanation for FP offered by Hanson, et al is nuanced, and it is my favorite, given my fascination with the possibility of extraterrestrial life. Even if the development of human civilization is not especially “early”, the number of interstellar civilizations, grabby or not, is probably still quite small at this juncture. And no doubt space travel is tough! These civilizations and their interstellar pioneers might not endure long enough to cover the distances necessary to reach us. Even more pertinent is that we’ve really only been “looking” in earnest for maybe ten decades at the most, and without complete coverage or much precision. Alien origins or spatial conquests within the last 100 years at distances exceeding 100 light years would not yet be visible to us. And again, it’s remotely possible that there is a grabby civilization whose expansion will intersect with us sometime in the near future, but it is still too distant to be within our backward light cone. If closing on us fast enough, it could have been within a single light year six months ago and we would not yet know it!

Do Civilizations Scale Like Cities?

Now let’s return to the kind of great filter put forward by WB. They first appeal to the observation that cities scale superlinearly. That is, in cross-sectional data, the relationship between city population and various measures of income or output (and other metrics) are linear in logs with a coefficient greater than 1. That means a city with twice the population of another would generate more than twice as much income.

There are reasons why we’d expect city size to be associated with greater productivity, such as an abundance of collaborative opportunities and economies of agglomeration. However, WB assert that it is impossible for a city to sustain a superlinear growth relationship over time, requiring “unbounded growth”, without periodic bursts of innovation. Otherwise, a city encounters a growth “singularity”. WB maintain that the inability of innovation to sustain unbounded growth manifests in a cascade of failure in such a city, or at least homeostasis.

WB go on from there to claim that a civilization, as it advances, will become so interconnected via technology that it can be treated analytically like a single super-city. This assumption, that whole worlds scale like cities, offers WB an analytical convenience. They assume that population growth outstrips the supply of finite resources with an inadequate pace of innovation. WB further propose that civilizations confronting these barriers might undergo “awakenings” under which zero growth is accepted as a goal.

Of course, the growth of a city will stagnate when its size overwhelms its ability to meet demands. A city might be under severe resource constraints. There are external phenomena that can cause a city to languish. All this depends upon the unique vulnerabilities of individual cities. Certainly a widespread dearth of innovation could do the trick. A planetary civilization might be subject to similar constraints or limiting events. Some planets might be resource poor or have especially hostile natural environments. Aliens unfortunate enough to be there will not and cannot become “grabby”. But WB’s hypothesis amounts to the assertion that no civilization can hope to achieve “grabbiness”.

Faults In the Clouds of Delusion

The WB argument is misguided on several levels. First, there is only limited evidence that the scaling of cities is time invariant — that the relationships hold up as cities grow over time —no singularity required! After all, the super-linear relationship referenced by WB is based almost entirely on cross-sectional data. Moreover, the scaling assertion is atheoretic. Rationales are offered based on human social connections and presumed, fixed technical relationships between city population and such things as energy use and infrastructure requirements. However, the discussion is completely devoid of the equilibrating processes found in market economies and the guidance of the price mechanism. Instead, growth simply rages on until the pace of innovation and limited resources can no longer support it.

WB appear to assume that a planet’s finite pool of resources places a hard limit on the advancement of civilization. This is more than a bit reminiscent of the Club of Rome and it’s “Limits to Growth”, or the popular understanding of Thomas Malthus’ writings. That understanding is based on a purely biological model of human needs. which was spectacularly wrong in its prediction of worldwide famine. But that was only a starting point for Malthus, who believed in the power of markets. And even in primitive markets, the very scarcity with which biological needs conflict is what incentivizes greater efficiencies and substitutes. When something gets especially scarce, the market signals to users that they must conserve, on one hand, and it also incentivizes those able to commandeer resources. The latter act to fill the need with greater supplies, close substitutes, or inventive alternatives. Again, these kinds of equilibrating tendencies don’t seem to be of any consequence to WB.

The focus on super-linearity and the relationship between population and economic and other metrics obscures another reality: global fertility rates have been declining for decades and are now below replacement levels in many parts of the world. In addition, we know that birth rates tend to decline as income rises, which directly undermines WB’s concern about super-linearity. The unsustainable population growth envisioned by WB is unlikely to occur, much less overwhelm the ability of resources and innovation to provide for growth in human well-being. WB also ignore the fact that in-migration to cities is a primary contributor to their population growth, whereas in-migration has not been observed at the global level… at least that we’re aware!

What is never in short supply is human ingenuity, if we allow it to work. It enables us to identify and extract new reserves of resources previously hidden to us, and every new efficiency increases the effective reserves of resources already available. Mankind is now on the cusp of an era in which mining of scarce materials from the moon, asteroids, and other planets will be possible.

WB are correct that there are obstacles to urban growth, but they seem only dimly aware of the underlying reasons. Cities must provide myriad services to their residents. Many of those services will experience meager productivity gains relative to goods production, and consequently increased costs of services over time. This is an old problem known among economists as Baumol’s disease, after William Baumol. While it is not limited to cities, it can be especially acute in urban areas. The cost escalation may be severe for services such as education, health care, law enforcement, and the judicial system, which are certainly critical to the economic viability of cities. However, there will be future innovations and even automation of some of these services that boost productivity. Still, they are bound to mostly rise in cost relative to sectors with high average growth in productivity, such as manufacturing. Baumol’s disease is unlikely to tank the world economy. It is simply a fact of economic evolution: relative prices change, and low productivity sectors will suffer cost escalation.

The kind of “awakening” WB anticipate would only occur if individuals are willing sacrifice their liberties en masse, or if elites coerce them to do so. Perhaps there are beings who never imagine the kinds of liberties humans expect, or at least wish for. If so, I’d wager their average intelligence is too low to accomplish space travel anyway. We’ve learned from theory and history that socialism imposes severe constraints on growth. That’s why I once proposed that civilizations capable of interstellar travel will have avoided those chains.

Conclusion

Wong and Bartlett attempt to explain the Fermi Paradox based on the “asymptotic burnout” of civilizations. That is, they believe it’s extremely unlikely that any civilization can ever advance to interstellar travel, or as Hanson would put it, to be “grabby”. WB rely on an analogy between the so-called super-linearity of city scales and the scales of planetary civilizations. They generalize super-linearity to the time domain. In other words, WB make the heroic assumptions that the economic aggregates of planetary civilizations scale over time as cities scale cross-sectionally.

WB then claim that civilizations will confront limits to advancement based on their inability to sustain their pace of innovation. This amounts to Malthusian pessimism writ large. Today, human civilization, while not without its problems, is nowhere near the limits of its growth, and we are nearly ready to reach out beyond the confines of our planet for access to new stocks of resources. There are vast stores of unexploited energy even here on earth, and there are a number of relatively new energy technologies that are either available now or still in development. And there will be much more. Like the Club of Rome, WB lack an adequate appreciation for the power of markets and incentives to solve economic problems, which includes spurring innovation.

Finally, WB make the wholly unsupported conjecture that some civilizations will undergo “awakenings”, choosing to adopt homeostasis rather than growth. WB might or might not realize it, but this implies an abandonment of market institutions in favor of centrally-planned stagnation, and not a little coercion. Perhaps we should view WB’s hypothesis as a cautionary tale: get woke, go broke! Certainly, a homeostatic civilization that relies upon the ignorance of central planners will never develop the capacity for interstellar travel. It simply cannot generate the wealth or expertise necessary to do so. In fact, they are more likely to suffer bouts of mass starvation than any sort of middling prosperity. We probably haven’t seen other civilizations yet, and maybe we’re “early” on the development time-scale for civilizations, but when and if aliens arrive, it won’t be thanks to socialist “awakenings”. WP are at least correct in that regard.

UFOs and the Crisis Seeking State

26 Friday Mar 2021

Posted by in Extraterrestrial Life, Government

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Happy with the government’s management of the pandemic? Happy with how much government grew during the pandemic? How well do you think governments would manage our realization that we have nearby extraterrestrial observers? It’s hard to know what that would mean for our future, but such a presence could well pose a singular menace to humanity. It might ignite panic, to say nothing of the bedlam that would ensue with the actual ingress of extraterrestrials or their intelligent machinery.

How would governments handle it? If the pandemic is any guide, my guess is they would follow the authoritarian impulse. For our own safety, that is. Hoarding and shortages of key goods might ensue. Curfews and stay-at-home orders would be seen as a way to limit civil disorder. Depending on the perceived threat, draconian measures such as limiting the use of electronics and communication devices might be considered. No telling what might seem appropriate to political leaders, but a military component to the response is much more likely than under a pandemic, and not just because of the external threat.

Let’s assume we’re talking about observers, not battalions of landing parties. A lot would depend on what’s known about them, or more specifically what the government knows. Why are they probing our atmosphere? Why are they studying our planet and our civilization? Are they waiting for a larger force to arrive? Can their machines self-replicate using resources mined from elsewhere in the solar system? Of course, the reaction of the public depends on how the government characterizes the presence of our observers. That gap in knowledge is of great concern.

But let’s take a step back. Is it real? We know the pandemic was “real”, but many question its true severity and the appropriateness of stringent non-pharmaceutical interventions, including yours truly. Some would say the government’s response was opportunistic, calibrated to force a change in political leadership, and calibrated to transform the role of government in our lives as well as attitudes about that role. Now imagine the opportunity for even more drastic change in the role of government given the prospect of an intersection with a potentially grabby alien civilization!

Like many others, I am fascinated by the possibility of life beyond our planet. Discussions of the Drake equation and the Fermi paradox are like candy to me. UFO sightings are always a matter of curiosity, except now we’re learning to call them “unexplained aerial phenomena” (UAPs) under guidance from government and military authorities. Lately, we’re hearing a lot about UAPs observed and filmed by military aircraft and detected by other forms of telemetry. These admissions are considered a sea change in the government’s attitude toward sharing sensitive, and possibly socially disruptive, information with the public. By June 1, a large batch of information on additional UAP sightings is due to be released under the Intelligence Authorization Act of 2021, which was signed into law by President Trump in December.

I’m as curious as anyone, but there are many reasons to be skeptical about UAP sightings, at least insofar as entertaining the possibility that these are extraterrestrial beings or machines. For example, there are natural (and technical) explanations for the images seen in the Navy videos. But some have speculated that these are sightings of top-secret technologies developed by an agency of the federal government such as the Defense Advanced Research Project Agency (DARPA). A former Pentagon UFO Program Chief dismisses that as improbable. Well, if you say so. Another possibility is that a foreign government has leaped far ahead of the U.S. in the science of flight. That would be threatening to U.S. security, though perhaps not as threatening as the machinery of an interstellar expeditionary force.

Whether the potential threat is an intersection with extraterrestrials or simply advanced technology possessed by an earthbound adversary, might it be in the interests of certain factions to promote our vulnerability? Or to manufacture evidence of such a vulnerability? Forgive my tin-foil hat, but I think the answer is yes. For example, it would be an opportunity for the defense establishment to garner more funding. It’s also a potential opportunity for those who wish to impose a more authoritarian order. There is always something to be gained from potential threats, so much so that major segments of our society seem to thrive on them. But is that what’s happening?

Defense funding is one thing, but the kinds of threats in question might call for widespread actions on public safety at all levels of government. Federal funding will be required to meet these needs, after all, and only the federal government can print money to create the means of competing for resources with the private sector. This is consistent with other federal initiatives that, beyond their stated public purposes, seem almost designed to eviscerate the power of state and local governments:

“The plan to federalize government is already moving and has three parts:

  • Flood every unit of local government with federal cash, irrespective of need, while prohibiting tax cuts, thereby bailing out failing states and cities.
  • Make that flood of federal money made regular and permanent.
  • Annul or override state laws that make certain states competitive, thereby eliminating their competitive advantages, and federalize elections to make it all permanent.”

The third point has as much relevance in the context of any threat to our security as did the pandemic. Once lower levels of government are dependent on federal funds, there is little they can do to resist federal demands. The more credible the threat of an incursion by an extraterrestrial or foreign force with awesome technological power, the more likely are voters to accept expansive programs to enhance their safety, including assistance to lower levels of government for providing various forms of local protection … the federal way.

The pandemic did little to promote faith in the government’s ability to manage a crisis. Nevertheless, look no further than the federal budget explosion induced by the pandemic for evidence that advocates of expansive government did not let the crisis go to waste. Will they want new crises? I’m sure they will. There’s certainly a possibility that a drummed-up threat from UAP’s would be a candidate down the road. It might need a little more percolation, but make no mistake: it has potential value to statists.

I still prefer to call them UFOs, and it’s still fun to think about them, but if they’re “real”, or even if they belong to a foreign power, we might be in big trouble. If they’re not “real”, our own state actors might toy with us enough to make us wish we’d never heard of UFOs.

Our Stardust Scrutiny, A Reverie Thus Far In Vain

01 Friday Jul 2016

Posted by in Extraterrestrial Life

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smbc_klingons

The Fermi paradox juxtaposes the fact that we’ve heard no signal from extraterrestrial life against claims that life must be common in the universe. The paradox, named after physicist Enrico Fermi, is not so inscrutable given 1) the immense distances in interstellar space; 2) the likelihood that few civilizations have survived long enough to attain a high level of advancement; and 3) the slim chance (until recently, perhaps) of detecting messages from a distant civilization.

These points are addressed in recent paper by Evan Solomonides and Yervant Terzian of Cornell University entitled “A Probabilistic Analysis of the Fermi Paradox” (the full PDF is available for download on the upper right at the link). The authors note that the first broadcast from Earth that could be detected beyond the planet took place roughly 80 years ago. Unfortunately, it was Hitler’s commentary on the superiority of arian athletes at the 1936 Olympics. That seems a shame, but then it’s unlikely that the recipients can interpret the signal at all. Still, the authors estimate that by now, that broadcast will have reached over 8,000 stars and over 3,500 earth-like planets within an 80 light-year sphere around the Earth. That might sound like a lot, but it is an infinitesimal fraction of the Milky Way galaxy. There is roughly a zero chance that an advanced civilizations exists within a population of potentially habitable planets that small.

How Common Is Life?

Solomonides and Terzian extend their analysis using a version of the so-called Drake equation, which relies on a series of assumed probabilities to calculate the number of of active, intelligent civilizations in the galaxy, call it N. However, the authors assert that their version of the Drake equation yields an estimate of N for the entire history of the galaxy, but it looks very much as if they’ve simply redefined the equation’s terms. They use the equation to specify a relation between 1) the average length of communication history for all intelligent civilizations; and 2) the total area of all spheres of coverage, which is dependent on N. They assert that as of today, this combined area must encompass less than one-half of the galaxy because that implies that we are less likely to have heard a signal from extraterrestrials than not to have heard one. And we haven’t. However, this seems like a thin foundation from which to draw implications, and it is based on an expectation. Even if those spheres covered 90% of the galaxy or more, it would not rule out the silence we’ve “heard” to date. Nevertheless, the authors use this inequality to derive a lower and upper bound on the number of intelligent, communicating civilizations in Milky Way history.

Expanding Broadcast Spheres

Again, Solomonides and Terzian define “spheres of communication” extending into space as far in light years as the length of a civilization’s broadcasting history in earth-years. Earth’s sphere of communication now extends outward by 80 light years. But imagine that a long-extinct civilization on the other side of the galaxy sent messages about 30,000 years ago. The signal might be reaching us just now. But if that civilization’s broadcasting history lasted 1,000 years before an untimely extinction, its broadcast sphere would be like a hollow, expanding dumpling, now almost as wide as the galaxy itself but with dough walls a constant 1,000 light-years thick. Only the walls contain broadcast information, so the areas of spheres like these are not simply additive. The hollow “inner spheres” must be subtracted to get the total broadcast area.

Revisiting the Duration of Broadcasts

The communication spheres defined by Solomonides and Terzian are “disks” rather than spheres, because collapsing the galaxy into two dimensions simplifies the analysis. They do not appear to allow for the sort of hollowness implied by an older, advanced civilization with a limited survival time. That matters in terms the history relevant to our failure to detect signals thus far. If a civilization’s broadcasting history is of short duration relative to its distance from Earth, then its communication sphere has thin broadcast walls. If that now-extinct civilization originated signals on the other side of the galaxy more than about 35,000 years ago, the signals would be irrelevant to “our” Fermi paradox because by now, Earth is almost certainly inside the wall of its expanding broadcast “dumpling”. The signal passed us by before we were advanced enough to have thought about it. So the relevant history of the galaxy, for purposes of identifying the broadcasting histories of civilizations we might have heard from by now, goes back a bit farther than the total width of the galaxy, which is roughly 32,600 light years. The relevant history might be 35,000 years, give or take, not the 13 billion years since the galaxy’s birth. At least that limits one dimension of the problem.

I find the following sentence somewhat troublesome because Solomonides and Terzian seem to focus on the length of broadcasting histories only with reference to the present time:

“The planar area of the galactic disk reached by communication from any intelligent civilization (assuming such civilizations are uniformly dispersed throughout the galaxy) can be modeled as the area of N disks with radius Lh (average length of broadcasting history in years)…“

Some of those N disks are probably hollow. The idea that civilizations are commonplace may not mean that they all exist contemporaneously, and while the authors must understand that point, the description above implies that all disks are saturated with broadcasted information from center to outer rim rather than hollow.

Solomonides and Terzian then attempt to place the radius of earth’s own minuscule broadcast disk within the hypothetical distribution of all such discs within the galaxy:

“… we know that humanity was almost certainly not the (or even one of the) first species in the galaxy to develop broadcasting technology, nor one of the last. Put statistically, it can be said with a high degree of confidence that humanity is somewhere in the median 90% of the population of galactic species as far as broadcasting history is concerned. That is to say, we are not among the first nor last 5% of civilizations to develop this technology. … Taking a very conservative estimate, we posit that we have been broadcasting for 5% as long as the average communicative species has been, and as such this upper limit on the average is approximately 1600 years. This can be substituted back into the inequality derived previously to give an idea of the frequency of life that our apparent loneliness suggests.“

A couple of notes on this statement: First, it assumes that the lengths of broadcasting histories are distributed uniformly from 0 to 1,600 years. Second, it seems to preclude any history of broadcasts prior to 1,600 years ago. If that is the case, then the number of civilizations they consider are what I’d call “near contemporaneous”. The authors do not seem to be accounting for all history after all.

Few Neighbors Or Many?

The authors go on to calculate lower and upper bounds on the number of communicating civilizations in the Milky Way, but again, in light of the quotes above, the implied existence of civilizations seems to be near-contemporaneous. Perhaps that’s okay for arriving at a lower bound. Again, Solomonides and Terzian assume that our 80 years of communication history puts us below 95% of all other communicating civilizations. Therefore, the longest history among such civilizations would be just 1,600 years. Because we have heard nothing, there must be great distances between relatively few civilizations: only about 210, according to Solomonides and Terzian.

In light of the relevant history of the Milky Way, 1,600 years seems outrageously short for the longest communication history. To my way of thinking, broadcast histories, whatever their number, must be distributed over the entire galaxy and over a time span of about 33,000 years. If extinctions shorten the duration of those histories, then it is possible that we’ve simply missed the outer walls of a number of broadcast disks that have already reached us. In that case, civilizations must be sparse both spatially and over time. Unfortunately, the authors’ lower bound for the number of communicating civilizations must be taken as an estimate for civilizations whose existence is near-contemporaneous with our own. However, that does not fit as neatly into an explanation of the Fermi paradox as the authors would like.

For an upper bound on the number of communicating civilizations, the authors assume that we are on the verge of hearing from another civilization in response to our initial communication. If so,  then we have a very close, neighboring civilization about 40 light years away, which implies an outrageously high frequency of civilizations in the galaxy: about 78 million, according to the authors. The upper bound relies on an assumption that it’s necessary for Earth to receive a response to our communication, as opposed to receiving an independent communication from afar. Perhaps the signal/response requirement is imposed for reasons of estimating a more densely populated galaxy for the upper bound.

The lower and upper bounds imply that life is either rare or ubiquitous; the authors claim that either is an unreasonable violation of the so-called “mediocrity principle”, which posits that our civilization is “run-of-the-mill”: the first is a violation because we are rare; the second is a violation because we’ve somehow managed to avoid hearing anything despite the denseness of communicating civilizations in the Milky Way.

Great Filters

It’s reasonable to question the assumption that an advanced civilization’s broadcast history would be of relatively short duration. The galaxy is a hazardous place, however, presenting extreme natural threats to any planet finding itself in a “Goldilocks zone” near its host star and capable of harboring life over an extended period. Threats range from interloping space rocks to variations in a planet’s exposure to radiation. Then, there are hazards to life arising from natural conditions on the planet itself, such as extreme volcanic activity and perhaps natural toxins. Finally, the development of technology brings hazards as well, including the possibility of chemical, biological and nuclear calamities. All of these constitute “Great Filters” that may prevent civilizations from reaching a stage of advancement sufficient for interstellar travel and colonization of other worlds.

Can such hazards be expected to put a halt to a representative civilization’s broadcasting, and within how many earth centuries? In some cases, it’s likely to be as few as 10 or 20 centuries, but even if extinction is common, there are also likely to be a few civilizations making it to the far right tail of the survival distribution. Those few civilizations, or even one, could have begun broadcasting so long ago that their communication spheres are much larger than the galaxy itself. We might just hear them if they exist, but perhaps that argues that they do not.

Detection and and Understanding

Beyond the limits of communication spheres, another compelling reason for our failure to detect signals from other civilizations is signal degradation over great distances. According to Solomonides and Terzian, signal strength weakens with the inverse square of distance. Even today, messages of extremely distant origin might be impossible for us to discern, let alone understand.

“Though a handful of these signals have been designed to be picked up by extraterrestrial intelligence (…. i.e. Fibonacci, the prime numbers, the squares, all broadcast in binary), the vast majority would be indecipherable. This is because an alien civilization would need to first decode binary into sound (and figure out our tone encryption method) or video (with very specific, inconsistent formats), and if they could somehow do that, they would then need to decode the resulting 3,000 human languages … into something they could parse successfully.“

Given sufficiently well-equipped listening centers here on Earth, detection becomes something of a mathematical exercise. Over the past 10-15 years, there have been advances in developing algorithms to extract signals from an otherwise noisy background.

Conclusion

With plausible assumptions, the Drake equation yields the conclusion that the galaxy may be populated with a large number of intelligent civilizations, larger still if we count those existing at any time over the past 35,000 years. The Solomonides and Terzian paper shows that the lack of detection on Earth is not very surprising, but in a limited context. The silence might be even less surprising if many of the historical civilizations had a broadcasting age of limited duration, generating hollow broadcasting spheres, because the walls of many of those spheres would have passed us by long before our own radio age. Therefore, the Fermi paradox does not seem to be such a paradox after all.

 

 

Will ET Be a Socialist?

19 Wednesday Aug 2015

Posted by in Capitalism, Socialism, Space Travel

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If we are ever visited or contacted by agents from an extraterrestrial civilization, what kind of society will they come from? The issue is given scant attention, if any, in discussions of extraterrestrial life, at least according to this interesting piece in The Freeman by B.K. Marcus. The popular view, and that of many scientists, seems to be that the alien society will be dominated by an authoritarian central government. Must that be the case? Marcus notes the negative views taken by such scientific authorities as Neil deGrasse Tyson toward laissez faire capitalism, and even Carl Sagan “… could only imagine science funded by government.” Of course, Tyson and Sagan cannot be regarded as authorities on economic affairs. However, I admit that I have fallen into the same trap regarding extraterrestrial visitors: that they will come from a socialist society with strong central command. On reflection, like Marcus, I do not think this view is justified.

One explanation for the default view that extraterrestrial visitors will be socialists is that people uncritically accept the notion that an advanced society is a planned society.  This runs counter to mankind’s experience over the past few centuries: individual freedom, unfettered trade, capitalism and a spontaneous social order have created wealth and advancement beyond the wildest dreams of earlier monarchs. Anyone with a passing familiarity with data on world economic growth, or with F.A. Hayek, should know this, but it Is often overlooked. Central planners cannot know the infinitely detailed and dynamic information on technologies, resource availability, costs and preferences needed to plan a society with anything close to the success of one arranged through the voluntary cooperation of individual actors.

Many of us have a strong memory of government domination of space exploration, so we tend to think of such efforts as the natural province of government. Private contractors were heavily involved in those efforts, but the funding and high-level management of space missions (NASA in the U.S.) was dominated by government. Today, private space exploration is a growth industry, and it is likely that some of the greatest innovations and future space endeavors will originate in the private sector.

Another explanation for the popular view is the daunting social challenges that would be faced by crews in interstellar travel (IST). Given a relatively short life span, a colonizing mission would have to involve families and perhaps take multiple generations to reach its destination. There is a view that the mini-society on such a ship would require a command and control structure. Perhaps, but private property rights and a certain level of democratization would be advantageous. In any case, that carries no implication about the society on the home planet nor the eventual structure of a colony.

A better rationale for the default view of socialist ETs involves a public goods argument. The earth and mankind face infrequent but potentially catastrophic hazards, such as rogue asteroids and regions of strong radiation as the sun orbits the center of the Milky Way galaxy. These risks are shared, which implies that technological efforts to avert such hazards, or to perpetuate mankind by colonizing other worlds, are pure public goods. That means government has a classic role in providing for such efforts, as long as the expected benefits outweigh the costs. The standard production tradeoff discussed in introductory economics classes is “guns versus butter”, or national defense (a pure public good) versus private consumption. IST by an alien civilization could well require such a massive diversion of resources to the public sector that only an economically dominant central government could manage it. Or so it might seem.

As already noted, private entrepreneurs have debunked the presumed necessity that government must dominate space exploration. In fact, Elon Musk and his company SpaceX hope to colonize Mars. His motives sound altruistic, and in some sense the project sounds like the private provision of a public good. Here is an interpretation by Tim Urban quoted at the link (where I have inserted a substitute for the small time-scale analog used by the author):

“Now—if you owned a hard drive with an extraordinarily important Excel doc on it, and you knew that the hard drive pretty reliably tended to crash [from time to time] … what’s the very obvious thing you’d do?
You’d copy the document onto a second hard drive.
That’s why Elon Musk wants to put a million people on Mars.”

Musk has other incentives, however. The technology needed to colonize Mars will also pay handsome dividends in space mining applications. Moreover, if they are successful, there will come a time when Mars is a destination commanding a fare. Granted, this is not IST, but as technology advances through inter-planetary travel and colonization, there is a strong likelihood that future Elon Musks will be involved in the first steps outside of our solar system.

While SpaceX has raised its capital from private sources, it receives significant revenue from government contracts, so there is a level of dependence on public space initiatives. However, the argument made by Marcus at the first link above, that IST by ETs is less likely (or impossible) if they live under a socialist regime, is not based primarily on recent experience with private entrepreneurial efforts like Musk’s. Instead, it has to do with the inability of socialist regimes to generate wealth, especially the massive wealth necessary to accomplish IST.

Discussions of ETs (or the lack thereof) often center around a question known as the  Fermi Paradox, after the physicist Enrico Fermi. He basically asked: if the billions and billions of star systems, even in our own galaxy, are likely to harbor a respectable number of advanced civilizations, where are they? Why haven’t we heard from them? My friend John Crawford objects that this is no paradox at all, given the vastness of space and the difficulty and likely expense of IST. There may be advanced civilizations in the cosmos that simply have not been able to tackle the problem, at least beyond their own stellar neighborhood. No doubt about it, IST is hard!

I have argued to Crawford that there should be civilizations covering a wide range of development at any point in time. In only the past hundred years, humans have increased the speed at which they travel from less than 50 miles per hour (mph) to at least 9,600 mph. The speed of light is approximately 270,000 times faster that that! At our current top speed, it would take almost 50% longer to reach our nearest neighboring star, Alpha Centauri, than the entire span of human existence to-date. With that kind of limitation, there is no paradox at all! But I would not be surprised if, over the next 1,000 years, advances in propulsion technology bring our top speed to within one-tenth of the speed of light, and perhaps much more, making IST a more reasonable proposition, at least in our “neighborhood”. There may be civilizations that have already done so.

Answers to the Fermi Paradox often involve a concept called the Great Filter. This excellent HuffPo article by Tim Urban on the Fermi Paradox provides a good survey of theories on the Great Filter. The idea is that there are significant factors that prevent civilizations from advancing beyond certain points. Some of these are of natural origin, such as asteroids and radiation exposure. Others might be self-inflicted, such as a thermonuclear catastrophe or some other kind of technology gone bad. Some have suggested that the Large Hadron Collider in Switzerland could be a major hazard to our existence, though physicists insist otherwise. Another example is the singularity, when artificial intelligence overtakes human intelligence, creating a possibility that evil machines will do us in. The point of these examples is that some sudden or gradual development could prevent a civilization from surviving indefinitely. These kinds of filters provide an explanation for the Fermi Paradox.

More broadly, there could be less cataclysmic impediments to development that prevent a society from ever reaching an advanced stage. These would also qualify as filters of a sort. Perhaps the smart ETs lack, or failed to evolve, certain physical characteristics that are crucial for advancement or IST. Or their home planet might be light on certain kinds of resources. Or perhaps an inferior form of social organization has limited development, with inadequate wealth creation and technologies to transcend the physical limitations imposed by their world. On a smaller than planetary scale, we have witnessed such an impediment in action many times over: socialism. The inefficiencies of central planning place limits on economic growth, and while high authorities might dictate a massive dedication of resources toward science, technology and capital-intensive space initiatives, the shift away from personal consumption would come at a greater and greater cost. The end game may involve a collapse of production and a primitive existence. So the effort may be unsustainable and could lead to social upheaval; a more enlightened regime would attempt to move the society toward a more benign allocation of resources. Whether they can ever accomplish IST is at least contingent on their ability to create wealth.

Socialism is a filter on the advancement of societies. ETs capable of interstellar travel could not be spawned by a society dominated by socialism and central planning. While government might play a significant role in a successful ET civilization, one capable of IST, only a heavy reliance on free-market capitalism can improve the odds of advancing beyond a certain primitive state. Capitalism is a relatively easy ticket to the wealth required for an advanced and durable civilization, and conceivably to the reaches of the firmament.

Unfortunately, there is absolutely no guarantee that capitalistic ETs will be friendly  toward competing species, or that they will respect our property rights. They might be big, smart cats and find us mouse-like and quite tasty. Their children might make us perform circuses, like fleas. In any case, if ETs get this far, it’s probably because they want our world and our resources. My friend Crawford says that they won’t get here in any case. He believes that the difficulty of IST will force them to focus on their own neighborhood. Maybe, but on long enough time scales, who knows?

I would add a caveat to conclusions about the strength of the filters discussed above. A capitalistic society might reach a point at which it could send artificially intelligent, self-replicating machines into space to harvest resources. Those machines might well survive beyond the end of the civilization that created them. Conceivably, those machines could act autonomously or they could take coordinated action. But we haven’t heard from them either!

For a little more reading, here is SETI‘s description of the Fermi Paradox, and here is a post from io9 on the Great Filter.