#53. Where are All the Space Aliens? [evolution, evolutionary psychology]

EP    EV

Red, theory; black, fact

Canada's remote Algonquin Radio Observatory,

which took over SETI duty between 1988-91.

Astronomical observations and the Fermi paradox

Contemporary exoplanet research keeps turning up extra-solar-system planets that seem to be promising abodes of life of the Earthly variety (never mind the completely weird biochemistries that may exist on other planets). In the habitable exoplanets catalogue (HEC), kept by the Planetary Habitability Laboratory, University of Puerto Rico, Arecibo, the list of planets found orbiting in the conservative habitable zone now has 17 entries, and a 2013 paper by Petigura et al. ("Prevalence of Earth-size planets orbiting Sun-like stars") placed the percentage of stars in our galaxy with potentially habitable planets at 22 ± 8. Accumulating evidence suggests that life is common in our galaxy, yet SETI research—the search for extraterrestrial civilizations that send out radio signals that bear some stamp of intelligence—has drawn a complete blank, as far as I know. And if it did find something, it would make such a sensation in the media that no-one could help knowing. So I ask you: where are all the space aliens? This question is generally attributed to 20th-century physicist Enrico Fermi and has since become known as the Fermi Paradox.

My hypothesis is this:

Life is one thing; intelligent life is quite another. This is a form of the Rare Earth hypothesis, which is one of the avenues that has been explored through the years in the search for a resolution of the Fermi Paradox.

Biospheres may not be permanent 

No doubt there are many, many planets in our part of the galaxy that have some form of primitive life, and many, many more "graveyard planets" that once had life but are now sterile. Mars may well be an example of this kind of planet in our own solar system.

Biochallenge!

I conjecture that if we seem to be alone in this part of the galaxy, based on the negative SETI evidence, it is because we are, and this is because we have evolved to the level of intelligence first in this galactic neighborhood, because evolution on the Earth is egregiously rapid. It has taken us four billion years to get this far, which doesn't sound so fast, but everything is relative. This rapid evolution is plausibly a response to challenges: all the various natural disasters we are subject to here on Earth, examples being bolide (meteor) crashes, continental glaciations, drifting continents, droughts, earthquakes, floods, hurricanes, long climatic warm spells, tornadoes, tsunamis, volcanism, wild weather, wildfires, and winter.

Sept 23, 2018: Tornadoes knock out primary transformer station in my town.

Case in point: a large bolide strike is believed to have triggered the extinction of the dinosaurs, making way for the rise of the mammals, and we ourselves are the descendants of those mammals. The bolide may have killed the dinosaurs indirectly, by touching off a climate shift in our dangerously unstable world. This would explain the temporary presence of dinosaur fossils above the Cretaceous/Tertiary iridium anomaly, which has been a problem for the bolide hypothesis.

Case in point: the rise of modern humans seems to have coincided with the end of the last continental glaciation. The rigorous, cold-climate conditions prevailing then might have selected our ancestors for high ability in building shelters and sewing protective clothing. These skills might have required the rapid evolution of a high ability to process spatial information, which we then leveraged into the building of civilizations upon the return of temperate climatic conditions.

To contrive a planet that is so challenging and difficult, yet has not succeeded in destroying life altogether in four billion years, may require a very rare combination of parameters (e.g., our distance from the sun, the size and composition of the Earth, the presence of the asteroid belt, the presence of the Oort cloud), and this rarity has led to our emerging into intelligence before it happened anywhere else in this part of the galaxy.

These parameters may well have special values at which critical behavior occurs, such as the onset of positive feedbacks leading to heating or cooling. Earth may be simultaneously close to several of these critical points, a rare circumstance, but one that does not require extreme, atypical values of any given variable.

My take on the Rare Earth hypothesis therefore emphasizes what are called "evolutionary pumps" (e.g., glaciations, bolide crashes, etc.) in discussions of this hypothesis, as well as the anthropic principle. 

August 28, 2011: An Ottawa sunset inflamed by a recent hurricane in the USA.

Evolution

I further conjecture that the difficulties of our past have left their mark on us, and we call it "evil." Some will deny that this concept has any construct validity, saying, "It's not a thing," but I think that it is an approximate version of something that does, which I term "dispersalism" in this blog. This is because a basic strategy for surviving disasters is dispersal. 

Our planet's predilection for disaster has deeply ingrained dispersal tendencies into most species here, by the mechanism of natural selection. Humans now get their food from agriculture. However, agriculture requires a settled existence and is therefore in opposition to dispersal, so the plot thickens.

This characteristic of agriculture results in the psychological pressure for dispersal relentlessly building, pressure-cooker fashion, across time, until a destructive explosion occurs (war or revolution), thereby accomplishing the long-delayed dispersal.

Wildfire smoke seen in Ottawa, Jun. 2023

#51. Advanced Human Depopulation Model [population, evolutionary psychology]

PO   EP

Red, theory; black, fact

Picture 1: A four-stage model of a human depopulation event. C = cycle; growth = growth phase; depop = depopulation

Picture 1 shows a four-stage model of human depopulation events that is intended to account for more data than heretofore. The same two emotional programs, the anger cycle and the sadness cycle occur in two "generations," with the second generation having greater violence and using modified signals.

• Stage 1: depopulation by emigration; accomplishes dispersal of the human species; coordinated by an exchange of anger signals;
• Stages 2-4: depopulation by mass murder: accomplishes long-term population density confinement within limits;
• Stage 2: coordinated by an asymmetric exchange of contempt and sadness signals; has similarities with cannibalism;
• Stage 3: total war program; coordinated by an exchange of anger signals with mimicry added;
• Stage 4: loss of civilization; triggered by a repudiation of the social contract by trusted elites with grudges: coordinated by increasing paralysis on the part of victims and increasing cynicism on the part of perpetrators. May be too recent an evolutionary development to have an efficient halting signal.

Nevertheless, the modes of worship of Islam are the best place to look for such a signal or other remedy if it exists. In this connection, the Islamic prayer discipline has potential to alter brain physiology, based on variations in blood flow to this organ, known to be highly sensitive to same. The variations would come about as a result of the highly regimented posture changes occurring during Islamic prayer. I have coded these postures according to the probable effect on blood pressure measured at the brain, and the result looks like this:

Picture 2. The inferred brain physiology of Islamic prayer. Source of data: YouTube, "Time to pray with Zacky," accessed 05-23-2019.

 Shown are my inferred variations in brain oxygenation during two rakat, or units of prayer. Bowing is coded the same as sitting, namely 1. Prostration is coded as 2 and standing is coded as 0. Some forms of Islam prescribe up to 19 rakat per day. Special procedures (Sujud Sahwi) exist for fixing prayers performed erroneously due to "forgetfulness" but this "forgetfulness" I find suggestive of temporary brain dysfunction due to lack of oxygen from getting up too quickly, possibly at about minute 2, above.

The above observation is to help establish that Islamic prayer manipulates a variable that matters, always an important issue at the outset of a research project. You don't want to waste taxpayer money blindly researching variable after variable and concluding at great expense merely that none of them was relevant.

#50. A Theory of Christianity [evolutionary psychology, population]

PO    EP

Red, theory; black, fact

Continuing from Post #49, doubts about the completeness of my assessment began with this statement by Saint Paul:

“And if Christ be not risen, then is our preaching vain, and your faith is also vain.”

1 Corinthians 15:14, KJV

I was struck by the clarity and insistence of this impossible claim. What is going on here? We as theoreticians need to drill down here.

“Risen” means having come back from the dead, which is still an impossibility for modern medicine. However, Paul explains that what dies is a “natural body,” whereas what rises, or is “resurrected,” is a “spirit body,” which is “incorruptible.” The word resurrection does not appear in the Old Testament (Hebrew Bible), making its first appearance in Matthew, the first book of the New Testament. All things considered, the concept is obviously central to Christianity.

Postulate 1: Resurrection theology is an approximate theory, and as such, is allowed to contain an impossibility.

An Alternative Theory 

The old, skeptical explanation of the resurrection, namely that the crucifixion was a fraud, deserves mention here. The New Testament mentions particular Romans and Pharisees sympathetic to Jesus. Extrapolating, I posit a pro-Jesus faction spanning all segments of that society and including many influential Romans and Pharisees, who would have had the resources necessary to pull off such a deception, but who could not openly interdict the crucifixion for lack of the necessary influence. Thus, the seeming miraculousness of the resurrection would in reality be a measure of the power of the illusion that groups identified as “The Enemy” are implacable and unitary.

Postulate 2: Christianity is focused on taming a third stage of depopulation that follows the anger cycle and the sadness cycle if neither of these has returned population density to the reset value after a certain time. 

An Evolutionary Interpretation 

This third stage is the total war stage, and it takes place on an international scale. Examples are WWI and WWII, which would be the international phases of national conflicts between a central-European majority and Serbs and Jews, respectively. Total war is arguably altruistic because each of two alliances or countries is helping the other with their population problem. The required signaling cycle seems to be that of the anger cycle but with the exchanged signals doing double duty as liquidation tactics. This is not just a fight, where the only consideration is what would be the shrewdest blow; there is a strong tendency to ape the opponent’s latest gambit, as expected in an exchange of signals "designed" to lock non-altruists out of the process. This psychology is called “sending back the bullet” in battlefield situations and “poetic justice” in everyday life. It is satisfying and it is a signal and it is illegal in peacetime, no matter that the other guy started it. In peacetime, you have to search elsewhere for your solutions than in mimicry and cooperation with a dangerous emotional program. Furthermore, if you allow yourself to be drawn into a vendetta, you just wrote an “ = “ between yourself and the person you take exception to. 

The total war program is well known for its destructiveness to the infrastructures of civilization, which suggests that the program evolved recently and is still being refined by natural selection. It may not even be older than agriculture, the last quantum leap in our ability to increase our numbers. That new ability may have generated the selection forces that brought forth the total war program.

Christian theology works a rational override on the anger cycle by reassuring believers that they will be resurrected and therefore need not fear death. Since anger is fear in disguise, this reassurance undercuts the anger-cycle-like dynamics of the total war program.

Postulate 3: the corresponding exact theory of Christianity is that depopulation events always leave survivors and Christianity enhances your probability of being one of them. When population density has declined to the reset value, this should trigger a dramatic turnaround in the Zeitgeist from death-producing attitudes to nurturing ones, to start the population-density curve on its next long, slow upward climb. The resurrection of “spirit bodies” may refer to the re-establishment of life-valuing attitudes in society.

It follows that the human race is being selected for a predisposition to Christianity, and probably other religions as well.

The book of Revelation, the last book in the New Testament, appears to describe the sudden depopulation event that ends the population-density cycle. This is identified as the end of time/history, but remember that we deal here with an approximate theory.

Practices

Christian worship activities revolve around the Eucharist, a communal sharing and consumption of bread and wine. Its purpose is to eradicate the deepest roots of the fear of death, a fear that leads to the hatreds of the total-war emotional program. How does it work?

The Eucharist pacifies people by exposing them to the halting signal of the total war program. So, it halts. How did the consumption of bread and wine come to be the halting signal? Because they are made by people playing with their food, maybe for the sake of variety. However, this comes at the cost of caloric content (not caloric density) because the yeast always takes its cut. This practice will only make sense under conditions of plenty, which return with sufficient depopulation. Thus, alcohol, which I assume to be the active signaling ingredient, and leavened bread now signal to the human limbic system the return of abundance. I conjecture that these signals have a subtle pacifying effect, making it easier to resist tit-for-tat total-war signaling.

Alternatively, Jesus may have been medicating the disciples with food and alcohol to keep their arousal level out of the panic zone at a time of peak emotion so that they could continue to function adaptively.

#49. A Naturalistic Theory of Worship [evolutionary psychology, population]

 PO    EP

Red, theory; black, fact

Anytown, Canada, Apr. 11

Religion has a theory part and an applied part. The latter are the modes of worship. Since our moral codes are held by at least the Abrahamic religions to be commands from God, it would follow that it’s pretty important to conform to them, and most of us have difficulty doing this all the time. To help us, religion has developed a behavior-modification role, the role of the modes of worship.

The behavior-mod role aims at mitigating the human form of the Calhoun Effect—a tendency to aggression linked to rising population density but not to actual want per se. See post #36. Population density would have been an issue even millennia in the past when the world population was a minuscule fraction of what it is today, when people began living continuously inside walled cities for protection from their enemies. Within the inflexible confines of such a city, you have the makings of a human Calhoun experiment. Not coincidentally, the city of Jerusalem, sacred to three world religions, was a walled city. Nowadays, at a world population of 7.5 billion, it can be said that the world is our walled city. What can religion now tell us about how to get along?

Jerusalem in 1972

I’ll focus on the Abrahamic religions: Judaism, Christianity, and Islam, which developed in that order, all in the Middle East, each of the last two acknowledging its debt to the previous. I suggest that these three religions form a series of progressively increasing effectiveness in mitigating the Calhoun Effect, by an accumulation of folkloric knowledge. Thus, to see how modes of worship work, the purpose of this post, we need only examine Islam, likely to represent the most efficient solution. Form generally follows function most transparently at highest efficiency.

The Human Calhoun Effect

The natural human population density plot over time has a saw-tooth form, with linear increases alternating with abrupt decreases that return population density to some repeatable reset value. The linear segments are created by a negative-feedback controller in the limbic system that controls rate-of-change of population density to a constant positive value, not absolute density. At this writing, the world is probably coming to the crest of one of these linear segments, which began in 1950. The sudden population-density decrease that ends the cycle may have two phases: a first that produces population-density decrease by emigration, and a second that produces population-density decrease by mass murder, if the first phase does not take the system all the way to the reset value. The first phase accomplishes the biological function of dispersal, which is generally important for long-term species survival. The second guarantees overall stability on a multi-cycle time scale and wards off Malthusian catastrophes.

Both phases demand formally altruistic acts from individuals, but not of the warm-and-fuzzy kind. The first phase uses an exchange of anger signals to lock non-altruists out of the process so that the behaviour is stable over evolutionary time. The second phase locks out the non-altruists using an asymmetric exchange of signals: contempt signals going one way and sadness signals going the other way. The second phase culminates in the mass murder of the sadness signalers by the contempt signalers and the appropriation of all the resources of the sadness signalers by the contempt signalers. The last step guarantees that the contempt signalers will appear entitled to those outside the cycle.

Islam

Islam is conveniently summarized for our purposes as The Five Pillars of Islam, which are explained in the Quran, namely:

1) The Creed. 

(“There is no God but Allah, and Muhammad is the messenger of Allah.”)

2) Prayer.

3) Charity. 

(Concealed almsgiving is preferred.)

4) Fasting.

5) Pilgrimage.

The Theory

The creed is “The Great Why in the Sky” that people need for the control of their most difficult emotions. Strong emotion can be overridden by reason if that is required by a learned worldview, the validity of which the person is willing to bet their life on. Here, I attempt to supply a worldview based on evolutionary psychology. The creed, or “theory part” of a religion, also gets the rational mind cooperating with the behaviour-modification program, which acts on the emotional self. 

Rational override based on some creed may begin the work of extirpating someone's anger or sadness cycle, but behaviour modification may be necessary to finish it and produce a lasting improvement in the person's circumstances. These cycles may have deep roots inaccessible to consciousness and capable of perpetuating self-defeating behaviors if not treated appropriately.

Prayer superficially is a deliberate wasting of time, which is not free in metabolic terms because the worshipper has a basal metabolic rate that must be supplied whether he/she works or not. Regular inactivity is surely a luxury of only those enjoying abundance. This is implicitly saying to the anger and sadness/contempt programs: “Food is still plentiful, so it’s not time to get nasty.” These cycles may be triggered by signs of high population density, not actual want, but they should still be sensitive to metabolic signals that speak to whether actual scarcity exists. High population density acquired its potent psychological effects, after all, because it usually predicted scarcity in the environment of evolutionary adaptedness. Alternatively, prayer may work like meditation to turn off the internal voice and the unnecessary stress it causes if unscripted.

Charity, on the receiving end, that is, is for contempt signalers, who, as you will recall, are extremely entitled in the final stage of their emotional program. Accepting charity–goods that you did not work for–tells the contempt program that it has achieved its mission and can therefore halt. So, it does. In Islam, almsgiving is said to be best done in secret, an effect of which will be to spare the pride of the recipient. This will be an issue with contemptuous types.

Fasting–going without the necessities of life–is for sadness signalers and it tells their emotional program that they have given or lost all their resources to the contempt signalers, and therefore their program has achieved its mission and can halt. So, it does. On the other hand, based on my own experience with fasting, the practice may work by increasing the faster's energy level post-fast, and an increased energy level can solve a multitude of problems.

Pilgrimage is where you tell the anger-cycle program with your feet that you have been driven out of your homeland forever and must resettle elsewhere. Therefore, the program has achieved its mission and can halt. So, it does. 

Thus, the task of much religious behavior-modification can be likened to persuading a devil to depart by showing him false evidence that he has accomplished his purpose in coming, knowing that he is myopic. However, prayer tells him that he doesn’t even have to come in the first place.

#41. Corporate Sin [evolutionary psychology]

EP

Red, theory; black, fact

Not all of humanly willed destruction is due to two persons interacting, either in a sadness cycle or an anger cycle. Wars of depopulation and wars of dispersal represent these interactions promoted to the level of entire societies. This promotion theory assumes that the same hard-wired wetware is being used for both levels, but with the addition of a few more bits of code to support the social level.

Theologians such as Bishop Baycroft, writing in "The Anglican Way," are well aware of this extra dimension of human misery, referring to it as "corporate sin," and admit that it is a more difficult problem than individual sin. The advice I give in "Signaletics for Salvation" will not help you efficiently if your unhappiness has its roots in corporate sin (for example, if you are caught up in a military draft or are a slave), but it may be better than nothing. What about those extra bits of code?

The basic code design seems to be to transform a tiff between two individuals into a tiff between two leaders, then copy the emotions of the leaders into the heads of all the followers on both sides. Thus, a political leader is a kind of emotional conductor. This is why we have leaders.

By this theory, World War II was a tiff between Adolf Hitler and Winston Churchill, both famous for their speeches in which they inspired passions in their followers.

How do you get to be leader? The simplest answer seems to be that you just get famous and you are also someone who doesn't see a way to end his pain without involving the whole world. 

An attractive theory about fame, in turn, is that fame is 90% being-famous-for-being-famous, and 10% is being famous for something else, the predisposing factor. Human intergroup interactions have the form we observe because these predisposing factors are not random but are due to natural selection. Moreover, they are conditional upon prevailing conditions, such as the price of bread relative to wages. Finally, they already exist at the individual level. The process of garnering the absurd 90% of fame is the by-now familiar phenomenon of going viral, and its earlier historical equivalents. 

I imagine that this process is a positive feedback loop in the brain that involves the attentional system and Hebbian plasticity, the latter well known for having a built-in positive feedback. We also know that emotions are contagious (See: Hatfield E, Cacioppo JT, Rapson RL. Emotional Contagion. New York: Cambridge University Press, 1994).

#40. The Sadness Cycle [evolutionary psychology, neuroscience]

EP   NE

Red, theory; black, fact

Niccolo Machiavelli by Tito

The anger cycle and the sadness cycle may reach their full flower in wars of dispersal and wars of depopulation, respectively. 

The Function of the Sadness Cycle 

Wars of depopulation would serve to prevent Malthusian disasters such as general famine. The sadness cycle is a form of altruism that facilitates this depopulation by making a portion of the population sad and suicidal and the remainder contemptuous and entitled. The contemptuous ones take everything the sad ones have, ultimately their lives, and the sad ones let them.

If the sadness signalers were fighting tooth and nail, the transfer of property would leave the contempt signalers with many injuries, which would defeat the purpose of the whole process, which is to leave the residual population stronger and healthier than before under conditions of restricted food supply. Moreover, the sad ones and the contemptuous ones are playing two roles within the same adaptation, and if you can play one role, you can play the other. 

The Sadness Cycle in Evolution 

Since no altruism can evolve in the presence of selfishness unless the altruists are only altruistic to each other, a signaling cycle is required to lock the altruists together to the exclusion of non-altruists. Thus, sadness induces contempt and contempt induces sadness, and so on in a vicious cycle leading to the complete destruction of the sad ones and the transfer of all their property specifically to the contemptuous ones. This dynamic could be the origin of elder abuse and clinical depression.

History Repeats 

Machiavelli wrote, "He is made contemptible who is held to be changeable, light, effeminate, pusillanimous, irresolute, and from these the Prince must guard himself as from a reef." The traits listed appear to be the symptoms of unacknowledged sadness, and were no doubt quite lethal in Macchiavelli's time. Due to the present skyrocketing of the world population with the concomitant "Calhoun effect" from crowding stress, we are no doubt due for a remachiavellianization of daily life. 

The Anger Cycle 

Much of human unhappiness comes from destructive, escalating signaling cycles, usually between two persons. Examples are arguments, feuds, schools of thought, gang wars, and revolutions. The signals exchanged are initially personal expressions of anger. Importantly, these expressions are multi modal, and therefore highly redundant. (e.g., threatening utterances, tones of voice, facial expressions, gait, crashing and banging things, spying, following, etc.) Your anger comes out of you "through every pore."

The Function of the Anger Cycle

These signals are too many and varied for conscious control, which is why most people remain enslaved by their signals and cycles. The anger cycle may be selected so as to escalate until one of the parties must leave the country. When people are threatened, they seek allies, so all of society eventually gets drawn in and polarized as the escalation proceeds apace, like a black hole. Therefore, it is a group that must eventually leave, not a single individual, which is the basis of the refugee phenomenon. 

Evolution of the Anger Cycle 

In ecological terms, the refugee phenomenon is clearly sub-serving dispersal. However, dispersal-producing behavior is fundamentally altruistic in a backhanded way. The benefit to the supposed loser, the group that eventually gets driven out, is that occasionally they find a newly-emptied vacant habitat in which to settle and therefore can reproduce without competition. This is a tremendous benefit in evolutionary terms and may once have been great enough to redeem all the waste and suffering of human-style dispersal. 

However, altruistic behavior cannot evolve in the presence of non-altruists unless a signaling system is established to ensure that altruists are only altruistic to each other. That is why signaling is emphasized here. The reason why the signals are multimodal is that the altruism program probably breaks down occasionally because of the short-term advantages of being a non-altruist. This has probably happened many times in the past and the broken algorithm was repaired each time by natural selection with the addition of yet another signal component. 

The Bigger Picture 

The various signal cycles may reinforce each other. The four signal cycles that seem to form the framework of human life seem to have such an interdependence. These are: mother-child bonding, which could potentiate man-woman bonding, which could potentiate the anger cycle (via jealousy), which could potentiate the sadness cycle.

 

Picture credit: Wiki Commons

#36. Two Kinds of War [evolutionary psychology, engineering, neuroscience]

EN   EP   NE

Red, theory; black, fact

A Nazi Enigma code machine (Canadian War Museum)

There are probably two basic biological uses for human anger: dispersal, and providing an emergency brake on population increase that avoids Malthusian disasters by triggering wars. The second kind of war ends life without being notably efficient in producing mass migration. 

The Past

I have long wondered why the Four Horsemen of the Apocalypse seem to include two gentlemen in charge of warlike matters. Why the apparent duplication? The above may give the reason: one (with the bow) represents wars of depopulation and the other (with the sword) represents wars of displacement.

The Coventry Blitz produced so much mass migration into the countryside surrounding that city that it was an embarrassment for the British government, calling into question Britain’s willingness to fight. Was Coventry some kind of watershed, before which the conflict was of the displacement type, and afterward, of the depopulation type?

The facts bear this out, considering Nazi treatment of the Jews as a litmus test of the zeitgeist of that time. After coming to power in 1933, the Nazis aimed at forcing the Jews to emigrate, and by the outbreak of hostilities in September, 1939, 250,000 of Germany’s 437,000 Jews had done so. The Coventry Blitz was in November, 1940. The Holocaust began, in terms of men, women, and children all being targeted for execution, in August, 1941, nine months later. The German zeitgeist seems to have shifted gears in the fall of 1940, aiming at depopulation rather than displacement. I am obviously assuming that the evolutionary, selectionist justification of the Holocaust given at the time, in forums such as the 1942 Wannsee conference, was a rationalization.

A Sociological Theory

Wars brought on by population pressure may begin as the displacement type, and if this does not result in sufficient local reduction in population pressure after a certain time, the hostilities shift gears to the depopulation type of conflict. 

If human population is under PID [proportional-integral-derivative] control by the subconscious, the event causing the shift could be the amount of signal accumulated on the integrator rising above some threshold. This may actually be a second threshold, with the first and lower threshold controlling the outbreak of a war of displacement.

A paradoxical outcome of Calhoun's overpopulation experiments on rodents can be explained in terms of such an integrator. 

Calhoun’s Classical Experiment 

By providing unlimited food and water to a founder population of rats or mice, with regular bedding changes and exclusion of predators and parasites, the rodents were allowed to increase their population to fabulous numbers. However, the rodents were given no extra space. As the population soared to incredible densities, all kinds of pathological behaviors appeared along with a great deal of violence. Birth rates plummeted after a "behavioral sink" developed, and remained low, never recovering, as the population decreased all the way to zero.

An Engineering-inspired Theory 

My interpretation of the behavioral sink is that it is integrator windup, a pathology of humanly engineered PID controllers, and possibly natural ones too. The signal accumulated on the integrator has been building for so long, and the population crash is so sudden, that not enough time is spent at population densities below set point to cancel the "control debt" on the integrator, so it continues to insanely command a zero birth rate even as the population is heading for zero.

Philosophers May Have Noticed This

George Santayana wrote that "Fanaticism consists of redoubling your efforts when you have forgotten your aim." [source, Wiki quotes, accessed 06-11-2018] Which sounds like integrator windup to me.

The Future 

A third and highest threshold of the control debt may exist, which, if crossed, leads to the human behavioral sink and the possible destruction of the human race due to essentially psychological causes. In the behavioral sink, I postulate that everyone would be a ZPG (Zero Population Growth) fanatic and unable to change without pharmacological help. (Good old booze? It may not be that simple.)

#34. The Pilgrim and the Whale [evolutionary psychology]

EP

Red, theory; black, fact

The Cabot Trail, where you might see a whale

Just as the whale must hold its breath to obtain its food from the sea, so must a human restrain his or her anger to obtain a paycheck from society. 

The ecological niche occupied by the whale places two of its drives in contradiction: the drive to eat and the drive to breathe. In humans, the contradictory drives are eating and dispersal.

Dispersal is a biological process tending to expand the geographical range of a species. Left to itself, the range shrinks inexorably because of natural disasters such as fire, frost, famine, drought, and pestilence wiping out all members of a given species in a given habitat. When each habitat occupied by the species has had its disaster, the species will be extinct if it has not been dispersing all along. Dispersal re-populates the devastated habitats as they become able to support life again, thereby staving off extinction.

Unfortunately, human dispersal begins with fraught political contests. As soon as one side gets the upper hand, the other must flee. Result: mass migration, i.e., dispersal. Most human anger is really dispersal hunger. However, when people get mad, they break stuff. Stuff like buildings, airports, factories, railway lines, etc. This is the infrastructure on which we all depend for our survival. Because our ecological niche is a fragile built environment, we are required to compromise between eating and dispersal. And there you have my analysis of the biological roots of our unhappiness.

This contradiction in drives is the ultimate reason why every able-bodied Muslim must make the pilgrimage to Mecca at least once in their lifetime: it mellows them out by giving something to the dispersal drive. The same effect would explain the fact that first-generation immigrants are generally more law-abiding than the natives.

Other institutions that may exist to relieve dispersal hunger are: tourism, the fitness movement, seeing the world, conference-going, joining the Navy, going away to university, visiting faraway relatives for the holidays, companies moving their employees around a lot, and others I'll think of tomorrow morning.

Catholicism is also famous for its tradition of pilgrimage, to such places as Jerusalem, Rome, Lourdes, and Santiago de Compostela, the latter still popular today. Protestantism has no such tradition, however.

Judaism, Hinduism, and Buddhism all have strong traditions of pilgrimage, and the practice is so universal that it has been proposed as a Jungian archetype by Clift and Clift. I myself walk a lot, because I cannot afford a car or a downtown apartment close to all the amenities. But is that the ultimate reason? 

Happy trails.

Photo by Elyse Turton on Unsplash

#3. Human Reproductive Control [population, engineering, evolutionary psychology]

PO   EN   EP

Red, theory; black, fact

Here, I go into detail about the human population controller introduced in the previous post.

The Relevance of Engineering 

I assume that this controller is a masterful piece of engineering, like everything in the natural (i.e., evolved) world, as Leonardo Da Vinci declared.

Application of Filter Theory

The way to build an ideal feed forward controller is the inverse plant method, where the controller contains the mathematical inverse of a mathematical model of the system to be controlled.  To derive the model, you take the Laplace transform of the system's impulse response function. For populations, a suitable impulse would be the instantaneous introduction of the smallest viable breeding population into an ideal habitat.

The Impulse Response Function 

What happens then is well known, as least in microbial life forms too simple to already have a controller: unrestrained, exponential population growth as per Malthus, with no end in sight.

This exponential curve is then the impulse response function we need, and its Laplace transform is simple: 1/(S - r), where S is complex frequency and r is the Malthusian constant, that is, percent population growth per year. 

The Inverse Model

The mathematical inverse is even simpler: S - r, which is multiplied by the sensor-error Laplace transform to get the controller output. Multiplication by S followed by subtraction of the zero-time signal is equivalent to differentiation in the time domain. The effect of S-domain subtraction and multiplication by a constant remain the same when transferred to the time domain.

In humanly engineered systems, a feedforward controller typically operates in conjunction with a downstream feedback controller.

  

The Sensor Signal

The level of the noise produced so copiously by small children is probably the signal that people unconsciously use to estimate birth rate, and the wailing and long faces following a death probably serve the same purpose for estimating death rate.  My married older brother once showed me the developmental time course of child noise in the air with his hand, and it looked like an EPSP, the response of a neuron to an incoming action potential. The EPSP is the convolution kernel by which a neuron decodes a rate code. This suggests that the differentiation operation is telescoped into the sensing operation.