Showing posts with label homo sapiens. Show all posts
Showing posts with label homo sapiens. Show all posts

Wednesday, August 12, 2020

Language, Hunting and Bezos

Language makes us human and different from all other of earth's creatures. With it, we can think, plan and act. Other animals communicate with each other through various means (bees do it through dance). But only we have words and grammars, with which we can great structures of meaning. With language comes society, culture, science, technology, and history.

But from whence comes language? Perhaps from group hunting. Social carnivores such as wolves and lions do not have language but still coordinate hunting. Between early learning – cubs practicing innate skills and watching adults – and basic vocalizations, they can surround prey and attack in unison. Some whales coordinate their approach to circle their prey and drive them into a concentration that allows a dense feeding ball. But these creatures come with their weapons built in, fangs, teeth and claws or huge mouths.

Primitive humans did not have built-in weapons or thick hides. Out on the savanna, they were easy prey for other carnivores and would be poor hunters against anything big enough to satisfy the group’s hunger. They needed to make artificial weapons and, working together, use them to kill their prey.

At some point in human evolution, some series of chance mutations increased the brain’s capacity to process and organize information sufficiently enough to move beyond simple grunts and other calls towards a structured use of vocalizations. This would have provided a huge evolutionary advantage. Humans could begin to coordinate more elaborate approaches to prey animals.

Language – as it became more elaborate – would serve many other purposes, such as passing on learning about making weapons and which plants were good to eat and where to find them. But it may have been most useful at first in hunting. Homo sapiens even hunted the huge mammoths into extinction. The first leaders in human society may have been those most capable of using language to coordinate hunting.

Language allows the possibility of free-flowing thought. With words and grammar, individuals can recall the past, examine the present, probe accumulated human experience, and imagine a future to be pursued to advantage. Throughout human history, those that do this best made the best “hunters” and captured the biggest “prey.” They drove human development by finding new ways to exploit others and the found environment. As society superseded family, they also thought of monopolizing what they “captured” to turn temporary advantage into permanent advantage. Great war leaders might seek to become kings, great inventors owners of ever expanding conglomerates. Jeff Bezos seeks to own the core exchange mechanism of 21st Century economy.

The drive to seek and maintain profit has provided a positive dynamic in human civilization. We cannot and should not seek to prevent the hunters from seeking new prey. Bezos and Amazon clearly show the advantages of the e-approach to economic exchange and it has become very useful during the current COVID-19 crisis. Bezos has even prodded old line hunters like Walmart into more effective ways. But allowing the best hunters free reign only works for the group when they share the meat.

A number of “tech giants” have now become the focus of attention for their efforts to monopolize their hunting style and for using it mostly for their own gain. It is reasonable for the rest of us – who also do our part to maintain the social and economic order – to look to limiting their ability to seek only self-enrichment. This doesn’t mean doing away with successful hunters – even if we could – but helping them share better through truly progressive taxation, less exploitative practices and perhaps breaking up their enterprises to create room for more hunters.





Thursday, June 18, 2020

The Cosmic Reset


In an early episode of the original Star Trek, aliens put Kirk on a rugged planet to duel with the captain of a rival Gorn ship. Kirk wins as the dinosaur-like Gorn was intelligent but really slow.

On Earth, dinosaurs never became intelligent. Arising 240 million years ago, they survived some 175 million years and for 135 million of those were the dominant land animal. By the time they became extinct, dinosaurs had perfected two ways of living: eating plants or eating each other. The plant eaters were excellent at converting plant matter into animal bulk and could grow very large. The carnivores were very good at using tooth and claw to eat the vegetarians. Some carnivores – such as the raptors – may have hunted in pacts and perhaps had some wolf-like intelligence. But in general, brain power doesn’t seem to have been on the dinosaurs’ primary evolutionary path.

Mammals arose just 10-15 million years after the dinosaurs. But for most of their first 160 million years, they lived underfoot as squirrel-sized, nocturnal plant eaters and insectivores. For this life style, relatively larger brains gave an evolutionary advantage. So under the feet of the dinosaurs, mammals got smart. Still, even with their brains, they could not compete with tooth and claw.

Enter the six-mile wide asteroid that found the earth 66 million years ago. That asteroid – nudged out of its distant orbit by a chance encounter with another rock or after swinging too close to Jupiter or Saturn – had travelled silently on its way for perhaps a million years to arrive just seconds before the earth moved just beyond it in its own orbit. When it hit, it set the earth on fire and after it had burned away, caused a long dark winter that left most creatures dead and many extinct, including the non-avian dinosaurs. This disaster was, however, good news for the mammals. Perhaps because they were small, lived underground and could eat anything, some survived (along with birds, who are smart flying dinosaurs). Within a million years, the earth had recovered and mammals were the dominant large land animal. Some of those eventually evolved even further in reliance on brains, eventually producing us.

That asteroid wiped the slate clean, resetting the course of animal evolution in favor of the brain and intelligence. There is no reason to assume that an additional 66 million years would have led the dinosaurs towards the Gorn as in 175 million, it had not done so. It’s as if the universe has a bias in favor of intelligence and sent a “do-over” to set things right.

Monday, May 18, 2020

Humming along….


The human brain is able to store and retrieve memories spanning the decades of an individual life. This occurs despite the exchange, death and constant rearrangement of our neurons. Which raises the question of how? In the hard drives of modern computers – classical or quantum – data is stored in physical bytes (or qubits). Data is written to them and retrieved from them. They can be re-written but the bits themselves do not otherwise change. If one does change through damage or failure, that bit of information is – generally speaking and leaving aside backups – lost. Computer memory is hard. Ours is soft, organic. Amidst the constant comings and goings of millions of nerve cells, our memories – our very identity and sense of self – remains constant (within the margins of error associated with life and aging). It’s a marvel of evolution, really.

According to a recent study, we owe this happy state of affairs to the fact that “as individual neurons die, our neural networks readjust, fine-tuning their connections to sustain optimal data transmission.” It’s a matter of individual nerve cells and networks of same being both excited and inhibited from discharging, thus maintaining a dynamic balance. Through this process, the entire system (networks of networks) achieves “criticality’ – sustaining an overall state that apparently maintains the data structure despite changes affecting the underlying organic bits. What this means is something like this: our inbuilt self-regulating rhythm of neural activity at the individual nerve, synapse and network levels tends towards an optimal level of brain-wide activity. That allows us to remember stuff even as nerve connections change. It’s like the brain is constantly humming to itself the story of our lives. The humming is the basis of mind and memory.

While one might take the notion of this “humming” as simply a metaphor, the researchers suggest that the mechanism they hypothesize also may explain consciousness. But it seems to me this cannot be the case. Ever listen to a gurgling stream? It kinda hums too. But a stream – okay, as far as we know – is not conscious. But we are. I hum therefore I am.

Tuesday, August 28, 2018

Dinosaurs and Intelligence

Dinosaurs arose some 240 million years ago. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201 million years ago. Their ascendancy lasted another 135 million years until the Cretaceous mass extinction 66 million years ago opened the world to the eventual rise of mammals and us. The first mammal-like forms appeared some 225 million years ago. But for the next 160 million years, mammals had to find their niches in the shadow of the dinosaurs, characteristically living a nocturnal lifestyle, emerging from burrows to feed only at night. This may have favored the evolution of better eye-sight, smell, touch and hearing to be able to navigate, find food and survive in the dark. But they still had to hide from the dinosaurs.

The question of why dinosaurs never developed cognitive intelligence, despite the many millions of years they were the top vertebrate clade, forms a rich WWW vein. (Search for the question and check it out.) Some dinosaurs did get quite intelligent in the form of birds. Some avian dinosaurs are even tool users. But there is no evidence that dinosaurs ever achieved anything like the human intelligence which has allowed us to alter our environment in ways both planned and unplanned. We human beings (the last surviving species of the homo genus) have been around for only some 200 thousand years. If one starts counting with the Australopithecus, then our progenitors go back around 3.6 million years. In either case, the fact that dinosaurs didn’t develop intelligence and complex technology even over a hundred million years while we did in just a few raises at least two questions: Is the rise of intelligence inevitable and does it have survival value over the long run?

The second question may be easier to answer. Dinosaurs and all other life on earth have done pretty well without human-style intelligence. Indeed, intelligence has not played a major role over the four billion years of life on earth. Some dinosaurs may have been clever hunters, as are wolves for example, and Jurassic Park has shown us a possible example. But they apparently found the use of claw, teeth, armor and size sufficient to last until a huge asteroid took them out with most other life. This leads to an answer to the first question, was the rise of intelligence inevitable. We can never know what might have happened with the clever dinosaurs if they were given the next 65 million years instead of mammals. Large brains need extra oxygen and are costly in energy. Maybe there would never have been any evolutionary advantage to making the investment. Human intelligence may be a cosmic accident, the result of a particular rock hitting at a particular moment allowing the burrowing underclass – mammals – to take their furtive ways into the sunlight.

So to return to the question of the long-term survival value of our big brains, the dinosaurs did really well without them and it is not clear that they will save us from ourselves.

Monday, February 1, 2016

The Killer Species: Us vs Them

The human species has a long record of Us vs Them conflict. Indeed, our species of Homo sapiens is the only surviving one from a long period in which various other kinds of humans shared the evolutionary record. For whatever reason, we emerged the sole survivor. We had various advantages. Deprived of in-built weapons such as claws and saber teeth, we evolved as especially inventive and effective tool-using killers. Our social organization – depending very much on our ability to use symbols and language to reaffirm in-group bonds and work effectively in coordinated activities – plus our advancing toolset made us formidable hunters and gatherers. While some of these advantages may have characterized the other members of the Homo genus, we did them better. Even our closest relative, Homo sapiens neanderthalensis, may not have had our full capacity for the advanced suite. After coexisting with us for some 160,000 years, the Neanderthals joined the long list of the extinct other humans.

Since our arriving on the scene some 200 thousand years ago, we have succeeded in eliminating, replacing and enslaving Them. Recent discoveries have pushed back the known origins of warfare within our own species to 10,000 years ago. The University of Cambridge anthropologist who discovered the evidence suggested that “lethal raids by competing groups were part of life for hunter-gatherer communities at the time.” A recent excavation in France of 6000 year old remains provides signs of violence including against women and children and perhaps ritual dismemberment. But it would be surprising if we were not already – and since the beginning – omni-predators of anything not Us.

We have come up with various reasons and motives for using violence against others. We want their food, water, land, gold, women, men. But these have often been overlaid or supplemented by the simple desire to rid ourselves of Them. We tend, all too frequently, to establish who we are by defining who we are not. Attacking Them reaffirms our identity. In the Hobbesian state of nature, nothing prevents the war of all against all. Within a society, a stable governing order – the Leviathan – can regularize this war. (Regularize, not end. Witness the current political conflict between Red and Blue in America or the current wave of xenophobia sweeping through the EU.) Between societies in conflict, or when internal order breaks down, the simplest way to distinguish the enemy is to focus on Them.

The conflicts of the last 100 years have been mainly of this Us vs Them kind, primarily over identity: ethnic, tribal or religious. They have spun from control when the regimes that ruled over multi-ethnic states have fallen or been seized or overthrown. Once identity conflicts begin, they quickly turn zero-sum. Violence begets violence and the possibility of achieving a political solution recedes beyond the horizon. In the globalized and technologically complex 21st Century, these conflicts tend to produce regional and global insecurity.

It should seem obvious that international relations requires a version of the Leviathan, an internationally acceptable way to manage conflict between and within states and address the tensions that allow conflict to emerge along identity lines. The UN provides a mechanism to do both. Seems that our choice may be to use it better and act more multi-laterally or perhaps see that we have all become the universal Them on the way to our own demise.