Sunday, June 15, 2014

The Protective Bubble of Civilization


We live inside a bubble. All of us in the developed world live inside this protective bubble we call civilization. 

No matter what the season or the weather, we leave our safe dry insured heated or cooled homes to travel down all weather roads inside comfortable cars to temperature perfect offices or stores. We eat sanitized food made from plants and animals that humans have learned to domesticate. We make sure we have shots or medicine to ward off disease. Often man-made music is everywhere we go. And while we can chose to step outside the bubble briefly to go for a walk -- usually in a well maintained park or down a city sidewalk -- most of our lives are spent inside the protection of this bubble.

Outside this bubble there is the natural world -- which the bubble of civilization depends on. Unfortunately we who live inside the bubble often forget that our lives and the lives of our children rely on the natural world such as the world's oceans and the world's climate. 

One of the dangers of being inside the bubble is that we can forget civilization depends on the much more powerful environment of the Earth.

And while the obvious parts of the bubble are buildings and transportation, there are other parts as well. We humans have learned to domesticate plants and animals, but those we use for food and other purposes are a very small part of the natural plant and animal world. Mass cultivation of these specialized plants is beginning to affect the world's ecosystems and also cause the extinction of many plants and animals that are not useful to civilization. In another example, we are protected from some diseases by modern antibiotics. But the overuse of antibiotics has resulted in resistant bacteria. And the vast majority of climate scientists agree that our highly developed technology is contributing to global warming.

The civilization bubble has worked so well and helped us live longer, more comfortable, healthier lives that we are no longer connected to the larger environment of the Earth. Yet the bubble of civilization has gotten so big -- leading to over seven billion people on the Earth -- it is starting to affect the world outside the bubble.


Because of the protection of the bubble, we are insulated and increasingly out of touch with the natural world and the effect that civilization has on the natural world.

What does this have to do with time, the subject of this blog? Time is a critical part of civilization and the bubble we live in. Yet because of the 'advance' of civilization we have distanced ourselves from the natural time cycles of the Earth and instead now, for example, depend entirely on an artificial time which is man-made. This means we are not in tune with the rhythms of the natural world. 

NOTE:
While civilization took perhaps ten thousand years to develop, it is only in the last hundred years or so that the industrial-technological revolution has taken civilization to the tipping point -- where it has both provided a comprehensive protective bubble for its citizens and also begun  to affect the larger environment of the Earth.



A BRIEF HISTORY OF MAN-MADE TIME

Our modern artificial time of minutes and hours and clocks and time zones took thousands of years to develop. It developed in a number of stages.


Upper Paleolithic: The awareness of repeating yearly cosmological events 

Humans began to notice specific recurring events in the sky such as the position of the sun at the summer and winter solstices and the seasonal occurrence of certain stars and constellations.



Cave painting from the Lascaux caves. While not yet proven, two different experts concluded that some paintings by old stone age people in the cave at Lascaux have a number of astronomical aspects. The evidence is so strong the cave has been declared a UNESCO heritage site for astronomy. (commons.wikimedia.org)
Neolithic: The creation of sophisticated astronomical structures

Buildings and structures were created that aligned exactly with key moments in the sun's travel such as the winter solstice -- showing a precise understanding of annual time and the seasons.


The Newgrange passage tomb in Ireland, built about 5200 years ago. "Once a year, at the winter solstice [the sun] shines directly along the long passage into the chamber for about 17 minutes and illuminates the chamber floor. This alignment is too precise to be widely considered to be formed by chance. Professor M. J. O'Kelly was the first person in modern times to observe this event on December 21, 1967." Document of the US space agency NASA. http://spacemath.gsfc.nasa.gov/SED11/P8Newgrange.pdf (commons.wikimedia.org)
Ancient Civilizations, Sumer and Babylon: The mathematical creation of hours and minutes

For administrative reasons,  the ancient cities and civilizations of Sumer and Babylon invented a way to treat time as a commodity, just like grain or bronze. Daily time was divided into hours, minutes and seconds and reasonably accurate clocks, such as water clocks, were constructed.


Sumerians divided time mathematically from seconds to minutes to hours to days to months to years to great years (19 years or the Metonic cycle). Today we still use much of what they invented.  (commons.wikimedia.org)

Water clock calculations on a Sumerian clay tablet. (commons.wikimedia.org)

Classical Civilization, Rome: The Julian Calendar

Julius Caesar came up with today's calendar which accurately kept track of the days in the year (even though it was tweaked a bit later by Pope Gregory)  -- but ignored the cycles of the moon. This calendar created a way of keeping track of time with a time-keeping chart. It was a way of accounting for time -- rather than referring to or looking directly at the sun or the moon or the stars -- thus distancing people from the astronomical cycles. 


This Julian calendar we use today keeps accurate yearly time, but ignores lunar cycles and downplays seasonal events such as the summer and winter solstices. (commons.wikimedia.org)
Medieval Civilization: The invention of mechanical clocks

Most early mechanical clocks indicated not only the time of day but the position of the sun, moon, stars and the zodiac. Later clocks got rid of their references to the heavenly bodies and only indicated the time in mechanical hours and minutes -- thus removing time from its relationship to the cosmos.


Built in 1410 the Prague astronomical clock displays a wealth of astronomical information. Lynn White Jr., Medieval researcher, said, "Most of the first clocks were not so much chronometers as exhibitions of the pattern of the cosmos...Clearly the origins of the mechanical clock lie in a complex realm of monumental planetaria...and geared astrolabes.” (commons.wikimedia.org)
The Culture of Science, 19th century: Time is divided across the world into time zones 

Prior to time zones each town and city set its clocks to high noon when the sun was at its zenith. The creation of time zones severed the connection between noon and the sun at its highest point at a local location. And this in turn distanced people from the relationship between the time of day and the position of the sun.


Standard Railway Time was adopted in the United States in 1883, dividing the country into 5 time zones. Many protested. The Indianapolis Sentinel wrote that people would now "eat sleep work ... and marry by railroad time." (commons.wikimedia.org)

The Culture of Science, 20th century: The clock is no longer tied to the Earth's natural cycles

In the 20th century the clock itself was removed from its connection to the natural cycle of the Earth's rotation. In 1967 an atomic clock became the standard for a second, creating a very accurate way of telling time -- but removing the clock from nature.


"NIST-F1 Cesium fountain atomic clock, serving as the US time and frequency standard, with an uncertainty of 5.10-16 (as of 2005)." Picture and quote from commons.wikimedia.org.
The Culture of Science, late 20th century: Artificial electric lights blot out the night sky

In a related development the ever-present light of modern civilization -- known as light pollution --  has washed out the night sky so most people are no longer able to keep in touch with the constellations and the seasonal astronomical cycles. These cycles were crucial to humans until about 50 years ago [much more about this in a later blog].


The same region of sky near a town of about 200 people (top) and near a city of about 400,000 people (bottom) in Utah, USA. The light pollution near any urban area now blots out much of the sky. (commons.wikimedia.org)






Tuesday, May 20, 2014

Climate Change & Our Age of Denial


Years from now our age will not be seen as a high point in technological achievement. Instead it will be seen a major failure. While we had the information and the technology to keep our planet from being harmed, instead humans buried their heads in the sand.


this age will be seen as 
The Age of Denial

A hundred years from now, this hi-tech age we live in will be seen as a watershed moment when we failed to grasp the seriousness of the situation. The obsession with consumer goods and instant gratification put civilization at risk. In our expanding consumer societies, people were more interested in comfort than the resulting damage to the environment.  The warnings about climate change and global warming that began about 40 years ago were ignored. And today it is obvious that we are going to pay the price -- and a very steep price at that.


JOKE: Why worry about global warming? 
Just turn the air conditioner temperature lower.

Read Carl Sagan's 1980 original essay, about the dangers of climate change, that he wrote over 30 years ago.




Now with the recently reported (May 12, 2014) irreversible collapse of Antarctic glaciers, a domino effect has been set in motion that will cause sea levels to rise and lead to a number of other related effects.

Read the following current report:
Irreversible collapse of Antarctic glaciers has begun, studies say

But first things first. 

The collapse of the glaciers means that sea levels will rise about 4 feet or 1.2 meters in the future due to this one factor. This is now a virtual certainty. But other forces are also at play. To put it simply, the hotter things get, the hotter they will get. Removing the reflective ability of the ice means that the oceans will absorb the sun's heat and heat up more. The additional heat around the globe will cause other glaciers to melt such as in Greenland. The addition of large amounts of fresh water into the salt water of the oceans may affect ocean currents -- see the graphic below. This in turn will cause extensive climate change across the globe. So a 4 ft./1.2m rise in sea levels is just the beginning as other parts of the domino effect will add to that.


Ocean Currents
"Ocean Circulation Conveyor Belt. The ocean plays a major role in the distribution of the planet's heat through deep sea circulation. This simplified illustration shows this "conveyor belt" circulation which is driven by the difference in heat and salinity. Records of past climate suggest that there is some chance that this circulation could be altered by the changes projected in many climate models." http://en.wikipedia.org/wiki/File:Ocean_circulation_conveyor_belt.jpg

While the naysayers continue to doubt, the scientific community is in almost total agreement. "Just over 97% of climate researchers say humans are causing global warming."   wikipedia.org/wiki/Global_warming_controversy

The irony is that we have the technology and the knowledge to design energy systems such as solar or wind that are sustainable and workable. And what do we have to lose by switching from a fossil based energy source to a sustainable, non-polluting energy source? Not very much in the long run. 

But all is not lost -- perhaps. If we can slow the inevitable warming by cutting back greenhouse gases now, the rise in sea levels can take much longer which will give us time to build and adjust. 

Time (the subject of this blog) is the critical factor. We need to make changes now for benefits that none of us will live to see, benefits that are a hundred years or more in the future. These benefits will be felt by our great-great-grandchildren -- perhaps. We cannot know for sure. 

This is hard for humans, who live a relatively short time, to plan for -- but if the survival of the human race is important, we have no choice.



NOTE:
25 years ago I wrote a series of essay warning about the dangers of global warming. More than 10 years ago I wrote the following essay which has been ranked in the top ten search results in Google for most of those years.
THE WORLD ENVIRONMENTAL CRISIS TODAY
Rick Doble (2003)

Dr. Michio Kaku has written that we live in an especially dangerous time. By time he does not mean the last couple of years or even the next fifty, but rather the hundreds of years it may take for us to progress from a planet of special interests to a  planetary culture.

Right now we are in the infancy of technological development with crude energy sources and chemical processes that have the potential to destroy the environment either as by-products of our civilization or with their deliberate destructive use in another world war.

Energy systems could be created that would cause virtually no pollution. Furthermore world wide economic development can proceed without harming the environment. Decentralized systems such as  solar panels can bring electricity and non-polluting development to many corners of the world.

Yet the destructive technology that we continue to use will have consequences for many years to come. In fact, we will feel the effects long after we have stopped using this technology and switched to a more environmentally friendly one.

Global warming will affect just about everyone, even though it is primarily a small number of nations that are responsible for greenhouse gas emissions. The same holds true for radiation pollution, as we saw in the Chernobyl disaster. Radiation crossed national borders and ended up all across the world.

Even over-population will affect us all, because a severe strain on the ecosystem in one part of the globe will create stress on other parts.

This crisis is very real. If the global temperature increases and the sea level rises, there will be massive changes in the weather which will cause migrations across the world as well as wide spread flooding. In this kind of environment, new and rapidly spreading diseases could wipe out large numbers of people and the food supply could be threatened. These kinds of disruptions could also lead to wars.

The problem is that any solution is a long term solution. As Hans Blix, the United Nations weapons inspector before the second American-Iraq war, has pointed out, these environmental questions are much more dangerous than weapons of mass destruction. Yet since politicians do not often think beyond their four or eight year terms, they feel no urgency to risk their political future to forge a fifty or hundred year policy that may be required.

Sunday, April 6, 2014

The Moderncentric Bias Against Prehistoric Cultures: Part 2


In Part 1 I offered the term moderncentrism. By moderncentric I mean the modern sense of superiority that sees prehistoric societies as inferior. 

And what does this have to do with this blog, DeconstructingTime? There are a number of theories that Upper Paleolithic people, about 15,000 years ago, had a sophisticated understanding of astronomy -- which to me means they may have had a sophisticated understanding of time, since the stars, moon and the heavens were their clock. And if they did, I want to understand it -- because their sense of time might shed light on our contemporary understanding of time. 

Unfortunately there is also a more powerful contrary opinion which holds that these people were not capable of such complex thought. 

I believe that much, but not all, of the rejection of these theories comes from a moderncentric point of view. So in this blog I want to discuss the biases against old stone age, Paleolithic, people in particular -- you know, the cavemen everyone makes fun of.


BIAS #1:
OLD STONE AGE PEOPLE WERE BARBARIC SAVAGES

Think this attitude is long gone? Think again. Here is a current quote from the online Encyclopedia Britannica of April 2014:
The Neolithic Revolution: Toward the end of the last ice age, some 15,000 to 20,000 years ago, a few of the communities that were most favored by geography and climate began to make the transition from the long period of Paleolithic, or Old Stone Age, savagery [ED. my emphasis] to a more settled way of life depending on animal husbandry and agriculture.
From the Google dictionary
DEFINITION OF 'SAVAGE'
Noun:
1. (chiefly in historical or literary contexts) a member of a people regarded as primitive and uncivilized.
synonyms: barbarian, wild man, wild woman, primitive
2. a brutal or vicious person.
synonyms: brute, beast, monster, barbarian, sadist, animal
Adjective: 
1. (of an animal or force of nature) fierce, violent, and uncontrolled.
2. cruel and vicious; aggressively hostile.
synonyms: vicious, brutal, cruel, sadistic, ferocious, fierce, violent, bloody, murderous, homicidal, bloodthirsty

Stereotypical view of an old stone age man with the obligatory club in hand.
(commons.wikimedia.org)

These are drawings of wild men or savages by Durer in the 15th century. (commons.wikimedia.org)
The characterization of any prehistoric people as barbaric savages has been around since the Romans. For example, when the invading Roman General Suetonius was about to go into battle against tribes of Britons in England, he said to his troops:"Despise the savage uproar, the yells and shouts of undisciplined Barbarians," according to the Roman author Tacitus. 

From the Google dictionary
DEFINITION OF 'BARBARIAN'
Noun:
(in ancient times) a member of a community or tribe not belonging to one of the great civilizations (Greek, Roman, Christian).
an uncultured or brutish person.
synonyms: savage, heathen, brute, beast, wild man/woman

Uncivilized barbarians destroying everything in their path as they attacked the Romans in 451 CE. Notice the helpless bound woman and naked child being trampled by horses at the bottom of this 19th century drawing. (commons.wikimedia.org)
While the tribes of Briton were not stone age people, they were seen by the classical world as wild beasts who were less than human -- as savage and uncivilized. Therefore they could be conquered and dominated. And this word 'savage' was later used to justify the domination of other 'savage' people by a number of colonial powers throughout history. For example, the Indians of North and South America were seen as savages by the English, Spanish and Portuguese. Read a detailed exploration of these concepts from the contemporary Berkshire Encyclopedia of World History.

I believe the loaded words 'savage' and 'barbaric' are a kind of name calling with little substance. As I will show later in this blog, stone age people had a sophisticated knowledge of their world. They studied and understood in depth a number of things that we modern people are ignorant about.
“Savages we call them because their manners differ from ours.”
Benjamin Franklin
However, a characterization of savagery, that has been around for thousands of years and continues to this day, will be hard to discard. To get rid of this notion, we must become aware of our prejudices.
Here is a current blog on the Internet that shows how easily the words caveman, barbarian and savage are accepted in contemporary thought: Curing the Caveman Mentality -- I’m sure that the “finger pointing” blame-game approach for determining responsibility dates back well into prehistoric times. Battles between Harry B. Barbarian and Charlie Q. Savage were likely fought...
About a 100 years ago, Sir James George Frazer, author of The Golden Bough, was perhaps the first writer to attempt a modern understanding of 'primitive' people. Yet even he could not avoid the bias of his age. He used the word 'savage' 229 times in the book and variations of 'barbaric' 47 times. He wrote, "Contempt and ridicule or abhorrence and denunciation are too often the only recognition vouchsafed to the savage and his ways."

Oddly this tone, which continues throughout the book, has drawn little attention. But it is typical of the attitude of people living in 'advanced' civilizations -- note that even the word advanced  has the same tinge of superiority.
A savage hardly conceives the distinction commonly drawn by more advanced peoples between the natural and the supernatural...Along with the view of the world as pervaded by spiritual forces, savage man has a different, and probably still older, conception in which we may detect a germ of the modern notion of natural law or the view of nature as a series of events occurring in an invariable order without the intervention of personal agency.
Sir James George Frazer, The Golden Bough


BIAS #2:
 MODERN PEOPLE ARE MORE INTELLIGENT THAN STONE AGE PEOPLE

Quite simply this is not true. According to anthropologists, about 200,000 years ago Homo sapiens sapiens evolved and they were anatomically modern humans with the same brain that we have today.
"One of the traps we have to avoid, I think, is that we shouldn't think people back in those times were dumber, not so bright, not so intelligent. So far as we know, they had brains exactly like ours. And if they survived in the conditions in which they lived, they were probably a lot smarter on their feet than most of us are today." 
Prof. Trevor Watkins, Prehistorian
'Nuf said.



BIAS #3:
STONE AGE PEOPLE DID NOT HAVE THE SOPHISTICATION
TO UNDERSTAND COMPLEX PHENOMENA IN ANY DEPTH 

NOTE: Since the focus of this blog is about time, I will go into some detail about stone age cultures and astronomy -- because the moon, sun and stars were the clock for Paleolithic people.

In an article, Prehistoric Astronomers? Ancient Knowledge Created By Modern Myth, Dr. Emilia Pasztor glibly dismissed theories and possible evidence of complex Upper Paleolithic astronomy, yet acknowledged in a rather condescending tone that "members of prehistoric societies would have acquired a certain level of knowledge and understanding of the celestial landscape." 

Dr. Emilia Pasztor's statement plays to our stereotypes about 'cavemen' as illiterate savages. Yet if you were suddenly transported back to Paleolithic times, I believe that you would be the one who was illiterate and they instead would be the sophisticated ones who could read the night sky effortlessly and in detail.

Rather than a limited knowledge of the celestial landscape, it is more likely that Upper Paleolithic people had a complex understanding of the night sky, one they had been taught and studied since birth -- a knowledge that had been handed down for thousands of years. It is quite possible they were able to read the stars, moon, and planets like a book. And not just any book, but rather a sacred book they had grown up with and memorized cover to cover, with perhaps constellations as chapters and stars as verses. 

Most modern people today are lucky if they can find one or two constellations. 

Plus as we all know, when you learn something from a very early age, it becomes second nature and part of your world. In addition it is also quite likely that from time to time over thousands of years, a particularly brilliant star gazer would have been born who would have added to the existing knowledge, just as Isaac Newton single-handedly added to scientific knowledge in the west.

But am I overreaching in my assumptions or is there evidence? It turns out that there is a wealth of evidence from a living stone age people, the Aborigines who live in Australia today and who have been there for about 40,000 years -- years before the stone age paintings, for example, were made at the Lascaux Cave in France. 


This confusing carpet of stars was familiar to Paleolithic people -- it was possibly like a book that they knew how to read from hour to hour, day to day, month to month and year to year. (commons.wikimedia.org)
“Of such importance is a knowledge of the stars to the Aborigines in their night journeys and of their positions denoting particular seasons of the year, that astronomy is considered one of the principal branches of education.” (Dawson 1881)
“The Aborigines of the desert are aware of every star in their firmament, down to the fourth magnitude, and most, if not all, of these stars would have myths associated with them.” (Mountford 1976)
Each member of an Aboriginal desert tribe was expected to know about 500 stars plus the constellations and myths associated with them. And more than 300 of those stars were quite dim (4th magnitude). They were even aware of the color of a number of stars. In addition this information was passed down orally for perhaps a thousand generations.

Nevertheless, none of the above proves that Upper Paleolithic people understood complex astronomical phenomena such as the yearly cycle of the zodiac -- it just means that it was possible. 

Graphic of the ecliptic path, the path that the sun, moon and planets follow during the year. While stone age people probably saw and named different constellations in what became later known as the zodiac in the west (this particular word from the Greek meaning "circle of animals"), the paths of the sun, planets, and moon would still have passed through these same groupings of stars no matter what the culture. It is quite likely that the phases of the moon were used as a monthly calendar, but that the rotating zodiac was used to keep track of time in relation to the yearly cycle and the changing seasons -- which was essential as time-keeping based only on the moon goes out of sync with the seasons. (commons.wikimedia.org)
But astronomy was probably only part of the complex expertise of Paleolithic peoples. 

During the day, these people probably knew their landscape in detail. Based on evidence from contemporary hunter-gatherer societies, stone age people knew about wild plants, for example: what was edible, how to prepare them, where they were located and when they should be harvested. And they knew which ones were poisonous. Modern people would not have a clue. In short Paleolithic people could read the sky, plants and the environment with a sophisticated knowledge.
Indeed, foraging peoples are legendary for their vast stores of local zoological and botanical knowledge. Lee, for example, writes that !Kung “tools and techniques of gathering are relatively simple” but the “knowledge of plant identification, growth, ripeness, and location . . . is extremely complex, and the !Kung women are highly skilled at distinguishing useful from nonuseful or dangerous plants and at finding and bringing home sufficient quantities of the best food species available” (Dobe !Kung 37) 
Michelle Scalise Sugiyama and Lawrence S. Sugiyama, Use Of Oral Tradition To Buffer Foraging Risk


BIAS #4:
STONE AGE PEOPLE WERE ILLITERATE

Okay, stone age people probably did not have a written language -- but that was for a very simple reason. They did not need it. As we know "necessity is the mother of invention" and in their case there was no necessity. 

Writing was only developed when human settlements became large and complicated. We now know that writing was originally invented for accounting -- for example, for keeping track of grain and supplies in the big cities of the Middle East. 

Yet many people feel that literacy is an essential part of culture.
“All the known world, excepting only savage nations, is governed by books.”
Voltaire
And while they did not have a written language, they had a spoken language -- which, according to the current thinking in linguistics, was not primitive but capable of complex thought and concepts.

What the hunter-gatherers had was an oral tradition which often used memory in a sophisticated manner -- and I suspect they were much better at remembering things than we are today for precisely the reasons that Socrates stated next. No less than the giant intellect of Socrates distrusted the written word and felt that a good memory was far superior. In Plato's Phaedrus Socrates recounts a story about the Egyptian god, Theuth, the inventor of  writing, who explains his great invention to the god/king Thamus. 
“This invention, O king,” said Theuth, “will make the Egyptians wiser and will improve their memories; for it is an elixir of memory and wisdom that I have discovered.” But Thamus replied, “Most ingenious Theuth...you, who are the father of letters, have been led by your affection to ascribe to them a power the opposite of that which they really possess. For this invention will produce forgetfulness in the minds of those who learn to use it, because they will not practice their memory. Their trust in writing...will discourage the use of their own memory within them. You have invented an elixir not of memory, but of reminding; and you offer your pupils the appearance of wisdom, not true wisdom..."
Plato's Phaedrus 

NOTE: Even the word 'prehistoric' -- which originally was an unbiased word meaning that part of history before written records -- now has a negative connotation. 

 BIAS #5:
 PALEOLITHIC PEOPLE USED QUITE PRIMITIVE TECHNOLOGY, THAT OF STONE

While the term 'stone age' carries with it the most negative connotations, the reality is that stone was their material, their medium. These people were masters of stone. They knew a variety of stones, their properties, where to find them, how to mine them, how to shape them, etc. They also knew how to attach wooden handles to stone implements or arrow heads to a shaft. The beautiful paintings on cave walls that have survived as long as 30,000 years were made from powdered stone paint that was applied to stone walls.   

Lithic reduction: Levallois technique of flint-knapping. (commons.wikimedia.org)

Lithic flake. (commons.wikimedia.org)

 Lithic core -- the piece that gets shaped by the removal of lithic flakes. (commons.wikimedia.org)

Finished flint knife - shaped so that a handle could be attached to it. (commons.wikimedia.org)

Stone sculpture of horse head from the same period as Lascaux. (commons.wikimedia.org)

 'Primitive' polychrome cave paintings were made with red, yellow, black, brown, and violet paints. The paints were produced from powdered stone mixed with binders using a type of spray painting technique. The stone pigments were then applied to the stone walls of the cave. This particular group of paintings, illustrated here from the cave at Lascaux, has lasted about 17,000 years, 12,000 years longer than the Egyptian pyramids. But, of course, we should not forget that these are unsophisticated works by savages incapable of complex thought. (commons.wikimedia.org)
During the Stone Age, humans fashioned tools from a variety of rocks, including flint, chert, basalt and sandstone. These materials were initially collected as loose rocks and, as demand grew, openpit and underground mining methods were developed. At some point...early humans discovered that certain minerals can be used to make paint. From natural pigments, such as manganese oxide, hematite and goethite, early artists created life-like images of bison, deer, mammoth and other Paleolithic animals. What compelled these artists to dig minerals out of the ground, grind them to fine powders, mix them with various binders (animal fat, saliva, water, blood) and apply them to cave walls hidden from view is unknown. 
A look at the history of mining, Mining Engineering Online
In the painted caves of western Europe, namely in France and Spain, we witness the earliest unequivocal evidence of the human capacity to interpret and give meaning to our surroundings. Through these early achievements in representation and abstraction, we see a newfound mastery of the environment and a revolutionary accomplishment in the intellectual development of humankind.
The Metropolitan Museum of Art, New York

The Lamp of Lascaux, carbon dated to about 17,000 BP.
Discovered in the floor of the Lascaux cave, this lamp shows the remarkable skill of Upper Paleolithic people. It is constructed of sandstone with a precise geometry. 
(commons.wikimedia.org)
The (exterior) oval bowl of the lamp of Lascaux is an almost perfect geometrical figure, of which the carving, according to craftsmen, has been done directly into the mass of sandstone...Some colleagues, like M. Delporte, believe that the eye of the Palaeolithic artist was better than the eye of a modern technician, and that for the sake of beauty of form, he obtained an astonishing precision. 
Beaune, S., White R., Ice Age Lamps, Scientific American, March 1993.



CONCLUSION: 
DISCARDING OUR MODERNCENTRIC POINT OF VIEW

When it comes to astronomy, we moderns do not spend much time looking up at the stars as they are not important to us. When we do, we rarely take the half hour or more required to let our eyes adjust to a full night vision.  We have not spent the hundreds of hours it would take to learn to see the sky as groupings rather than a confusing carpet of lights. We do not know the constellations; we do not know how the constellations and stars relate to the seasons and the time of night. We are not familiar with the movements of the planets, the constellations of the zodiac and we even are often unaware of such basic events as the spring and fall equinox and the winter and summer solstice -- events which were crucial to early humans. As a result I think it is very hard for us to understand how vital astronomy was to Paleolithic people.

And it is also important for us modern people to remember that until Galileo -- a mere 400 years ago -- the stars were quite mysterious. People did not know what they were -- but few thought of them as distant suns, like our Sun. In fact Giordana Bruno was burned at the stake, in part, for suggesting this only 410 years ago.
“We have not the reverent feeling for the rainbow that a savage has, because we know how it is made. We have lost as much as we gained by prying into that matter.”
Mark Twain 
Since Dr. Emilia Pasztor felt he had the right and knowledge to assume that "members of prehistoric societies would have acquired a certain level of knowledge and understanding of the celestial landscape," I will take the liberty to make my own assumptions based on evidence from hunter-gatherers.
Bronislaw Malinowski, the important early anthropologist stated that the "goal of the anthropologist, or ethnographer, is 'to grasp the native's point of view, his relation to life, to realize his vision of his world'. " (wikipedia.org)
Bronislaw Malinowski, Argonauts of the Western Pacific
If we try "to grasp the native's point of view," I think it is reasonable to postulate the following about the Upper Paleolithic view of the stars.
  • The landscape of the stars -- the celestial landscape as Dr. Emilia Pasztor called it -- was as familiar to Upper Paleolithic people as the landscape of the ground. Living in the open much of the time meant there was amble time at night, lying on the ground looking up, to observe the sky.  
  • Children would be exposed to the night sky from birth and would probably be given instructions about the stars from an early age.
  • These people were in a sense comfortable with the night sky, it was a place where they spent a lot of time and that they used for a guide. While the terrestrial landscape did change with storms, floods, volcanos, lightning, earthquakes and snow, the night sky remained about the same year after year. It was something they could depend on to be constant.
  •  Based on a wealth of data from hunter-gatherer societies and texts from ancient civilizations such as Sumer, Babylon and Greece, it is quite likely that groups of stars were seen as constellations of mythical figures. Constellations had stories associated with them which helped people remember them.
  • Paleolithic people were able to recognize the stars and constellations in all kinds of weather and lunar phases. So, for example, the stars looked quite different on a hazy night under a full moon or at dawn or dusk than they did when the moon was new and the sky was clear. These people also were able to identify constellations at varying angles and recognize parts of constellations when they set and rose.
  • The unpolluted skies of Paleolithic times offered a better view of the sky than today.
  • They were not only masters of stone but also of fire. They knew how to build fires in combination with stone to store or reflect heat over many hours.
  • The color temperature of an ember fire would have been perfect for staying warm while not interfering with the eye's ability to adjust to the dark sky and to continue to see the night sky once eyes had adjusted. Read more about this in this Sky & Telescope article about star gazing.

Fire with embers. (commons.wikimedia.org)
Based on evidence from contemporary indigenous people and these reasonable assumptions, I believe it is likely that old stone age hunter-gatherers did know the stars quite well and, after tens of thousands of years, began to see patterns and cycles. It is also likely that they felt the need to depict on the walls of caves some of the mythological figures they saw in the stars. However, long held beliefs about 'primitive cultures', in archaeology and other fields, dismiss such theories. 
"Evidence that contradicts the ruling belief system is held to extraordinary standards, while evidence that entrenches it is uncritically accepted."
Carl Sagan
Writing about a similar attitude in the United Kingdom Dr. Lionel Sims said that there is, "a deep assumption within archaeology that such is the complexity of the moon's horizon properties compared to those of the sun, that farming cultures just emerging out of foraging [ED. meaning old stone age] lack the sophistication to design monuments with lunar alignments. This view is contradicted by that of anthropology, which sees hunter-gatherers as fully human, as 'sophisticated' as agriculturalists, and who use lunar cycles to time their ritual life (Knight 1991, Sims 2006)." 
He further added:
"Science should not be limited to the socio-political pressures of institutional acceptance."
A new model instead "both explains the findings of archaeoastronomy and at the same time integrates those findings that remain from archaeology and anthropology."
Lionel Sims, Ph.D. 
WHY DOES A MODERNCENTRIC ATTITUDE MATTER?

A moderncentric attitude, that sees stone age people as inferior, damages our understanding of the past  and our understanding of how we as humans developed. "Deep assumptions" as Dr. Lionel Sims calls them (above) stand in the way of truth. 

In addition, criticisms that play to our prejudices need to be discredited. Dr. Emilia Pasztor, for example, while dismissing possible astronomical evidence, never explained his statement that nevertheless "members of prehistoric societies would have acquired a certain level of knowledge and understanding of the celestial landscape." This statement is vague and unscientific and plays to our assumptions that "a certain knowledge" by stone age people means that their understanding would not be very complex.  But I could just as easily say: A person today with a college degree would have acquired a certain level of knowledge and understanding of written material. And in this case we would assume, because they were college educated, that they would be quite proficient. 

If archaeologists and others in the field want to hold onto their assumptions, they need to put them to the test. These assumptions need to be out in the open and subject to scientific scrutiny. Then let the chips fall where they may. But assumptions, almost by definition, are a bit hidden -- like unwritten rules.

About 100 years ago Sir James George Frazer, author of The Golden Bough, did set the proper tone for investigating people of the past and stone age cultures in general. 
For when all is said and done our resemblances to the savage are still far more numerous than our differences from him; and what we have in common with him, and deliberately retain as true and useful, we owe to our savage forefathers who slowly acquired by experience and transmitted to us by inheritance those seemingly fundamental ideas which we are apt to regard as original and intuitive. We are like heirs to a fortune which has been handed down for so many ages that the memory of those who built it up is lost, and its possessors for the time being [ED. meaning us] regard it as having been an original and unalterable possession...
Sir James George Frazer, The Golden Bough, Chapter  23, Our Debt to the Savage