Oops, sorry, I forgot.

I forgot to acknowledge Mammalian Heritage Day this past November 2.  My excuse was that I had been recently hospitalized and was struggling to recover.  Still am to some extent, but I have remembered to celebrate Mammalian Heritage Day.  I will copy my 11/2/17 post below but let me add yet another special feature to our heritage.  I recently reread parts of Panksepp’s Affective Neuroscience and learned (always I learn something new) that while REM (dreaming) sleep is part of mammals’ ancient heritage, birds do it very little, and reptiles and fish not at all.  So thank your mammalian heritage for your dreams as well.

Today, November 2, is Mammalian Heritage Day.  Mammals might be the newest branch on the tree of life but their warm-blooded, live bearing, family bonding have somehow prompted the ongoing evolution of brains. Bacteria, insects, reptiles, and birds have been around longer, much longer, than mammals but the newest kid on the block has produced an increasingly powerful intelligence over the past 300 million years. We are not the crown but the beneficiary, so take today and give thanks by, for example, taking a mammal to lunch or out for a walk.

We humans in our evolution find ourselves benefitting fully from our mammalian heritage. Mammals appeared on the scene around 500 million years ago and have diversified into many different forms since. Consider their (our) primary characteristics. Being warm blooded confers a crucial independence from ambient conditions, an independence humans have taken to an ultimate degree. It is not just that mammals have adapted to many different environments around Gaia, including returning to the ocean, but we have further enhanced our independence by controlling and changing these ambient conditions, perhaps to own detriment but then no species continues forever.

Consider another characteristic: live births. This is especially important for three reasons. First, infants born viably but immaturely permit an incredible amount of post-partum growth. The benefits of this are astounding: increased brain growth and size and critical periods of maturation where experience affects brain development in deep ways. Second, parenting becomes a lot more than regurgitating food into infant mouths and then kicking them out of the nest. Oxytocin, a most important hormone for parenting energy and prosocial behaviors, has been around, according to some estimates, for over 530 million years. Over the course of evolution mammalian brains developed the capacity to respond more powerfully to this hormone—parenting and family life became more prominent in any adaptive success, and that leads us to the third reason: If you want to raise more intelligent children and pass on to them the benefits of prior generations’ experience, birth them live and immature, maintain a nurturing family structure, and extend their juvenile period so that they do not begin to reproduce until they are a decade or so old, and then watch them surpass their education. The discovery of controlling fire was not really that big of a deal; the passing on of this technique, however, was; just ask Prometheus.

Our immediate (relatively speaking) ancestors who showed the culmination of these characteristics are the primates who appeared around 53 million years ago. That means mammals evolved for 450 million years before our large brained, visually oriented, socially engaged, and quick intelligence kinfolk appeared and then simians appeared a few million years after that. Our line split off from the great apes around 8 million years ago and our partners, the dogs, appeared around 3 million years ago. Fire was important because it furthered this trend. Cooking food releases more calories, making digestion more efficient, and more energy from food powers increased brain capacity. Fire warms us and draws the family group to the hearth. Civilization began at the hearth (and it looks like it will die in committee).

So this November 2 take a moment to reflect on our genetic heritage and thank a mammal, any mammal, all mammals for continuing this genetic stream and tend to your hearth.


Part 4: Is art a spandrel?

To be sure, this view describes how art would seem to function today, but consider the human past.  It seems a certainty that over the eons of our recent evolution and the millenia of our prehistory that the human umvelt slowly changed from one dominated by our perceptual-motor engagement within the ambient to one composed from information displaced in time and space.  Indeed, by 100,000 years ago our umvelt would seem to have been composed of imaginal forms that encompassed the great uncertainties of what we now understand as the human condition.  These would include life, birth, death, weather, the rhythms of the sun, moon, and stars, health and disease, family, friendship and conflict, hunger, and plenty.  It also seems a certainty that for our umvelt to transform to one dominated by mnemonic and imaginal forms and for this information to come under the control of symbolic processes, our neuropsychological capabilities developed both the intrapsychic mental landscape supporting the growth of enduring cultural forms and the interpersonal processes whereby cultural forms were composed and transmitted through language and artistic means.  Our minds began sharing virtual forms.

These neuropsychological capabilities, whatever the details of genetic change were that led to newly formed structures along with the re-purposing of older systems, and given the opportunity of an extended altricial period, emerged from the neo-mammalian processes of attachment, bonding and empathy coupled with ever more powerful communicative abilities.  One incipient condition for the evolutionary emergence of art was the marriage between robust conspecific relations that were empowered by very keen empathic abilities and the adaptive processes dedicated to analyzing and accommodating to the exigencies and possibilities of living in a complex and changing world.  The development of symbolic thought in its dual capacity to control subjective information and to communicate that objectively thus enabled humans to solve the problems of living communally.  One of those problems was communal life, and art, both about the self and about the subject’s experience, has helped solve that problem.

Evolutionary psychologist Michael Tomasello has presented us with some interesting ideas about how humans came to solve life’s problems communally in two books, The Natural History of Human Language and The Natural History of Human Morality (69, 70). The essential idea here is that humans, as research by Tomasello and many others has shown, are very cooperative animals, significantly more cooperative than any of the other primates.  Given this powerful proclivity we have developed some high level social abilities involving cooperating to accomplishing complex tasks, role switching so that success was dependent upon group learning and not on any one special individual, and self/other evaluation as to one’s dependability in fulfilling any one role.  Thus, the social features of clear communication, standard protocols and fairness in interpersonal relationships grew to become cultural standards.  In Pierre Bourdieu’s terms, the human habitus emerged (5).

Tomasello has provided us with a very workable hypothesis about how we came to solve our problems communally and how we could regulate communal life.  Given the fecundity of our symbolic capabilities and the complexity of establishing group identity from diverse subjective selves, how are we to understand the creation of this communal mental life to be regulated?  How do we go from a habitus of procedural mores to a deeper culture of conceptual realities when those realities are nowhere in objective evidence?  How do we transmit and transmute that culture for inter-generational learning and ongoing adaptability?  Here we approach the evolutionary significance of art, whether it be a spandrel or a supporting pillar.  Today, after roughly 15,000 years of more or less continual cultural development, we are born into a cultural milieu of great expanse and subtle power.  The rise of agriculture and larger settlements, and the subsequent necessity of increased social organization, began the historical period of civilizations, but what culture came before and how it did, whatever it was, develop?  The evolution of Homo sapiens from its inception say 250,000 years ago to the ending of the neolithic period around 4,000 years ago came with brains capable of symbolic thought and social organization based upon symbolic processes.

When we embraced through our symbolic capabilities not just the practicalities of survival but also the mysteries of the human condition, e.g., birth, death, fate, disease, etc., and our deep need for family and social supports, we began the creation, transmission and deepening development of the cultural field.  Just as our brains map space, time and experience (that is a feature of our mammalian heritage), we also began to map the shared material from subjective musings about life’s exigencies, possibilities, and vicissitudes.  That came to include imaginative material and so began the composition of the deep cultural field, wherein flourished the narratives, beliefs, and mythic ideas about the forces of nature and the limits of life.

This development may have satisfied an incipient intellectual need for understanding and explanation, but more importantly, I think, the cultural field met two challenges.  The first was the need for social regulation of a sometimes all too fecund symbolic imagination by a shared and transmissible group of concepts related to the advance of the cultural understanding.  This established an authority of tradition and limits to what new gods, etc., could be created, because the traditions had stood the test of time.  The second was to ameliorate the distrust or mystery of what was going on in each person’s subjective musings.  So long as groups were organized around intimate social awareness and knowledge, e.g. families, clans and tribes, one could trust another not to be asocial and exploitative.  The ending of the neolithic period came about as agriculture led to larger settlements (28), so that trust based upon intimate knowledge was inadequate.  Metallurgy led to new sorts of tools and, critically, weapons, so that ability to understand another’s beliefs and intentions became a matter of vital importance. Finally extensive trading based especially upon writing brought contact with very different others, and this challenged the deep-seated mistrust of the others.  However, if their cultural field were similar to one’s own, e.g., gods were recognizable, myths spoke of familiar issues, and the habitus of interpersonal relationships were agreeable and valued safety and respect, then a basic level of trust could be extended beyond the intimate group.

For example, many cultures held that a guest or stranger be given a certain amount of hospitality, and that once admitted as a guest that person guaranteed mutual respect and safety.  Violations of these mores were not easily forgiven and if repeated, marked the offending group or individual as untrustworthy and uncivilized.  Other strictures, e.g., trading, marriage, theft, kidnapping, etc. operated similarly.  Some prehistoric art was certainly a cultural signal about group identity and what social mores might operate, just as a person’s individual art signaled something about their identity and social roles. Thus, the cultural field operated to regulate interpersonal and inter-group issues of trust, and art played an important because salient role in this domain.

Art works composed about experience also played a more subtle role in this extension of trust.

to be continued

Sun bears are us

One of the reasons I like Frans der Waal books so much is that he leads us to consider how we animals, especially us mammals, are alike in our talents.  One of the great lessons taught by Einstein and Susan Oyama is that theory constrains what we look for empirically, so we had better pay attention to our theoretical lackings.  Most people today understand that humans and other primates are really quite similar in our makeup and functioning.  Some understand that we also share a good deal with cetaceans, elephants and dogs. Some scientists study social animals for critical behaviors.  And a couple of assiduous scientists studied hours of video of sun bears who are rarely social and found, lo and behold, mirroring where we might least expect it given current theoretical leanings.  Oh boy!

Sun bears live in southeast Asia and are known to prefer to live in solitude except for mating and parenting.  I am not sure how they find each other wandering the jungle all alone, but sometimes they do and mate, then go their own way again.  The females bear cubs and they stay together for a couple of years and then they also seek their sweet solitude.  In Malaysia they have a refuge for sun bears that have been injured or are somehow unable to survive in the wild.  They keep them in a large reserve but they still meet each other more in captivity than would otherwise be the case.  And they videotape their encounters.  Yes, they are not real sociable creatures and yes, they prefer solitude, but they still play around with each other and their play involves mimicking one another. Yes, that’s right, they mirror one another just like so many other more sociable animals do.

Remember that mirroring is an incredible social action (or if you don’t remember, read some past posts here like from 7/19/18 & 7/31/18).  I see the theoretical difference between imitation and mirroring this way:  imitation is a behavioral replication of an observed action with little mentation attached and mirroring is so much more because mirroring allows the empathic understanding of another’s mood and intent.  At some point I wrote that the difference between imitation and mirroring is the difference between Skinner and Freud (although I prefer William James’ approach myself) or between surface behavior and inner dynamics.

To illustrate the difference, I long ago worked with a young autistic child who had virtually no expressive language and understood very, very little, like his name, the word ‘mama’ and maybe some foods.  But he imitated all the time.  If you pointed to something for him to look at, he would mimic your pointing while looking at you.  Most amazingly, he could repeat any sentence you said with very good articulation but without any sense that it was meaningful.  Pure and skillful echolalia, but not mirroring.  This ability to process phonemes auditorially and translate those sounds into motor patterns indicated that key areas of his left auditory and motor cortex were functional along with, and this is important, his arcuate fasciculus, the long fiber tract that normally enables mirroring of speech and, probably along with other fiber tracts, gestures and emotional expressions (on the right side—see post 4/24/14 & 5/30/18).

So sun bears have some neuropsychological capabilities to mirror conspecifics and they use these in play and almost certainly, parenting. (Mating I am not so sure about—hormonally driven and how much courtship/bonding do they engage in?)  Again, our mammalian heritage (see posts 11/2/18, 11/2/16) runs deep.  Travel on and check out the NYT article here:  https://www.nytimes.com/2019/03/22/science/sun-bears-faces-mimicry.html.


Aww, play time is over?  or  Aww, do I have to play with others?

An odd (?) and provocative (!) finding

Many members of my generation (born 1950) were the first in our families to go straight from high school to college and then to expect our children to do the same. Some of my friends quite wisely rejected college to pursue other career paths about which their parents were not keen. And some of my daughter’s generation also rejected higher education and some of them faced heightened pressure to continue on, such as hearing about the research on lifetime earnings between high school and college graduates to outright emotional rejection if they failed to carry on the college tradition. The reasons I heard then were primarily of two sorts, the preparation for a more lucrative career and the rite of passage into adulthood as college helps youth to engage with their peer group, develop a mature identity to carry them forth from the bosom of their family, etc. I rarely heard an argument for intellectual development and appreciation of the world of ideas, and then mostly when I listened to myself and other nerds.

Now I gather from a NYT story that scientists are searching for a genetic influence (of course) in who goes for further education: https://www.nytimes.com/2018/01/25/science/children-parents-genes-education.html. This began evidently a decade or so ago and the results have not been very elucidating, but recently a group of researchers looked at the genomes of parents to see if some clue could be found there as to whose children pursued more education, and voila, there was. I really like this research effort with its odd and provocative results, and I also have to wonder about the relative contributions of class, wealth and other family traditions that are, of course, also genetically influenced. I still remember my first team meeting at an internship in clinical psychology at a teaching hospital and learning that 6 of the 7 psychiatry residents were the children of physicians, a couple of them 3rd or 4th generation. Almost a caste or hereditary guild system there.

So the genes in their families helped impel these scions to further education? Maybe. The theoretical basis for this, I think, comes from Richard Dawkins and his concept of the extended phenotype. (I hope I have understood this correctly and can explain it properly). Basically idea of the extended phenotype is that genes act beyond their synthesis of proteins, etc. in their own soma, i.e., body, to affect other somas and the environment and that this extended action also promotes the continuation of select genes. Dawkins marshals considerable evidence for this hypothesis, so it is quite natural to think that parental genes affect offspring’s behaviors not just through the progeny’s genetic inheritance, say for intelligence, but also through parental behaviors that influence the next generation’s adaptation. Indeed, to me this is exactly the genius of our mammalian heritage; attachment and bonding, mirroring and social learning, cultural transmission, etc. are all biological actions carried from soma to soma (you know, our humanity’s biological roots in empathy and symbolization).

I have a younger friend here in the mountains of SW Virginia who comes from an eminently practical and mechanical family; they can build and fix almost everything. The uncles and cousins all live in houses they built together by pooling their talents. My generation in this family all finished high school reluctantly and went on to successful careers in industry, rising through the ranks because of their mechanical intelligence, good sense and work ethic. My younger friend recently shared that his 5 yo son does not want to start school because he would rather accompany his father on his job working with machines. The father is proud of that and don’t most fathers want sons to follow somehow in their footsteps; I think this might be a fairly invariant feature of human culture, at least in recent civilized history where trades and professions have become more clearly specialized and defined. My own father insisted futilely that I follow him in the military.

But is there some genetic basis for not insisting that your child follow after you in a trade but rather pursues more education? Is part of genetic ‘success’ and human evolution the tendency of some parents to promote their children’s going further or in a different direction? I would think that the human path from prehistoric to ancient to modern intellectual culture, progressing from animism and magic to science and engineering, over the long slog of history would have required such a genetic flow and current, even if it is a result of chaotic, random mutations building upon the genetic roots of our beings. And now this research may provide an entry into exploring how such progress was served by the extended phenotype in which parents promote greater intellectual understanding in their children through further education and not just following along with traditional ways, content with the orthodoxy of old.

Consider the past half million years or so as our ancestors developed a human habitus and conserved the old ways by resisting much of the new. I have read much history and fiction which show historically that children used to follow almost religiously their family tradition in work, class, etc.; indeed in many cultures and periods they had (& have) little choice. This notion may seem alien today, at least in the USA and western world where the ‘dream’ is of a better, richer, more technologically advanced way of life (and this, by the bye, is being challenged with the rise of other countries from the ashes of our imperialism), as we think progress is inevitable because of the increasing power of our science and technology. I believe that is, oh, so wrong. Balance is important in all matters, especially between material gains and social justice, and devolution waits just around the corner. Ask the survivors of the Holocaust and Hiroshima; watch as our democracy now faces a severe test because of anti-scientific bias, impoverished critical thinking, and neglect of fairness in economic rewards. (I will not bring up a catastrophic loss of electricity due to meteors or other calamities). Consider our own (American) falling rankings on measures of happiness, health, education (especially STEM subjects), gap between rich and poor, etc. We may indeed have genes for helping our children to appreciate further education, even ones for promoting their curiosity and progress in discovering new and better ways that have helped power our evolution for thousands of years or genes that led to greater intellectual progress. These genes would seem to help us accept, even insist that our children cherish an ethic of knowledge and the new understanding it brings and question our knowledge of ethics to seek a more just world. At least I hope later generations feel this benefit.

A good study, then, with odd and provocative results; such findings are sometimes our best hope for knowing ourselves in a changing world. Travel on.