Showing posts with label Time. Show all posts
Showing posts with label Time. Show all posts

Another Lap Around the Sun

SUBHEAD: This time we are going to try and sustain writing for this blog site.
By Juan Wilson  on 16 February 2023 -
(http://islandbreath.blogspot.com/2023/02/another-lap-around-sun.html) 

Like a year ago, I thought I'd be back on a daily, or at least "frequent" schedule of writing article for this website. This time there should be lass to distract me from getting more articles done.

 This will take a bit of effort not only to write, but more importantly, to properly post and make available online as it was in the past. This means getting familiar with different software and  protocols that has changed since we were last posting articles regularly. 

In the recent past we had to abandon the Apple platform and the software we used to generate content on this website. It was immediately much more difficult and time consuming to write, edit, upload and publish articles. 

Recently we have abandoned the Apple computer platform (but not the iPod and iPhone). Most of my effort recently has been on landscaping, home maintenance and small scale farming. This week it took me two days to trim off four medium (6"x15') size branches on two haole koa trees.That entailed  dropping the branches from atop a ladder using  an 8' pole saw. Yes it is dangerous and a bit difficult for a guy 77 years old. In the past such

We will see if it is possible for this old man to have a foot in both worlds (Windows, and Apple). So far it seems lumpy and uncomfortable... wish me luck.


Natural Time 2.0

SUBHEAD: An update on a universal time system for the planet Earth based on "natural time" from Mauna Kea mountain.

By Jonathan Jay on 4 November 2017 for BeNow.world -
(http://benow.world/?p=388)


Image above: Starlight over Mauna Kea mountain from Haleakala mountain on Maui.   Photo by Shane Michael Black. From (https://danspace77.com/2014/12/03/mauna-kea-starlight/).

[IB Publisher's note: There is a full explanation of this time system at BeNow.world.]

As we move further into the third millennium, perhaps now would be a great time to turn away from machine and atomic time, and return to the actual rhythms of the real world.  Not the model.  Not the fabricated.  Not the fictitious nor mean.  But the real.  So, what is real?

Hours, minutes, seconds and weeks – they are all made up. There is nothing intrinsically 7, 24, or 60 about time.

Time simply flows.

Time zones, daylight savings too – all social constructs, designed by people for their particular self-interests, mostly as a means of social control, and in the world we live in today; technological, industrial, and increasingly sophisticated, yet still machines.

All the data in the world will never teach you how to kiss, or love, or gaze in wonder at the heavens above.  This is vastly more profound.

The sun, the moon, and  stars these however, are real.  They gyre and swoon, eccentric and elliptical, and ever in flux, often at time-scales that exceed our capacity to easily recognize.  The universe is not a clockwork; it is made of energy.

It is not fixed; it vibrates.

We are not separate from it, we are of it.  In the natural world, time is elastic; it is liquid.  it pulses and flows.   It is fluid, not mechanical.  Continuous, not zoned. Flexible; neither standardized nor mean.

And yet legacy time systems rebel against these realities at every turn.  Why?

The Industrial world view, and the time model it perpetuates is separated from reality.  Separation seems to be a central principle; It literally exists apart. Rather than observe and conform to what actually is, the industrial time model asserts conceptual supremacy over the natural world it perports to describe.

Reality is too variable, too inconsistent — too alive — to be controlled, and so the actual univere is jettisoned for a more compliant and regulatable model.

And yet it remains as true today as it was in 1841 when Ralph Waldo Emerson observed “a foolish consistency is the hobgoblin of little minds.”

Some people say, time does not exist.  It is an illusion, created by the mind, founded on separation.  Which is exactly the what industrial time system is.  Alienated. And, alienating.

But Mauna Kea stands calm and connected.  It is a place from which the the earth almost touches heaven.  Where even the industrial astronomical community will admit as having some of the most ‘stellar’ seeing from anywhere on the surface of this world.  So much sky!

So still, and dark, dry and dust free the little atmosphere that slides above the summit.

Overhead at night  the stars shine and wheel across the sky, but hardly sparkle — the laminar flow of air over the summit so smooth flows.  The moon and the sun swoon and dance the tides.  And beneath them all, the Mauna slowly revolves, breathing in and out once a day, the end and the beginning of each revolution.

Not the suburb of some 19th century  European empire, but the tallest pinnacle on the planet surrounded by the broadest ocean in the solar system.

For more information about this natural time system, go to:  http://benow.world/?p=388

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The Terror of Deep Time

SUBHEAD: It's vital for humans understand the story in which we play our small but significant part.

By John Michael Greer on 21 September 2017 in Resilience -
(http://www.resilience.org/stories/2017-09-21/terror-deep-time/)


Image above: The Andromeda galaxy behind a silhouette of mountains. From original article.

Back in the 1950s, sociologist C. Wright Mills wrote cogently about what he called “crackpot realism”—the use of rational, scientific, utilitarian means to pursue irrational, unscientific, or floridly delusional goals. It was a massive feature of American life in Mills’ time, and if anything, it’s become more common since then.

Since it plays a central role in the corner of contemporary culture I want to discuss this week, I want to put a few moments into discussing where crackpot realism comes from, and how it wriggles its way into the apple barrel of modern life and rots the apples from skin to core.

Let’s start with the concept of the division of labor.

One of the great distinctions between a modern industrial society and other modes of human social organization is that in the former, very few activities are taken from beginning to end by the same person.

A woman in a hunter-gatherer community, as she is getting ready for the autumn tuber-digging season, chooses a piece of wood, cuts it, shapes it into a digging stick, carefully hardens the business end in hot coals, and then puts it to work getting tubers out of the ground.

Once she carries the tubers back to camp, what’s more, she’s far more likely than not to take part in cleaning them, roasting them, and sharing them out to the members of the band.

A woman in a modern industrial society who wants to have potatoes for dinner, by contrast, may do no more of the total labor involved in that process than sticking a package in the microwave.

Even if she has potatoes growing in a container garden out back, say, and serves up potatoes she grew, harvested, and cooked herself, odds are she didn’t make the gardening tools, the cookware, or the stove she uses.

That’s division of labor: the social process by which most members of an industrial society specialize in one or another narrow economic niche, and use the money they earn from their work in that niche to buy the products of other economic niches.

Let’s say it up front: there are huge advantages to the division of labor. It’s more efficient in almost every sense, whether you’re measuring efficiency in terms of output per person per hour, skill level per dollar invested in education, or what have you.

What’s more, when it’s combined with a social structure that isn’t too rigidly deterministic, it’s at least possible for people to find their way to occupational specialties for which they’re actually suited, and in which they will be more productive than otherwise.

Yet it bears recalling that every good thing has its downsides, especially when it’s pushed to extremes, and the division of labor is no exception.

Crackpot realism is one of the downsides of the division of labor. It emerges reliably whenever two conditions are in effect.

The first condition is that the task of choosing goals for an activity is assigned to one group of people and the task of finding means to achieve those goals is left to a different group of people.

The second condition is that the first group needs to be enough higher in social status than the second group that members of the first group need pay no attention to the concerns of the second group.

Consider, as an example, the plight of a team of engineers tasked with designing a flying car. People have been trying to do this for more than a century now, and the results are in: it’s a really dumb idea.

It so happens that a great many of the engineering features that make a good car make a bad aircraft, and vice versa; for instance, an auto engine needs to be optimized for torque rather than speed, while an aircraft engine needs to be optimized for speed rather than torque.

Thus every flying car ever built—and there have been plenty of them—performed just as poorly as a car as it did as a plane, and cost so much that for the same price you could buy a good car, a good airplane, and enough fuel to keep both of them running for a good long time.

Engineers know this.

Still, if you’re an engineer and you’ve been hired by some clueless tech-industry godzillionaire who wants a flying car, you probably don’t have the option of telling your employer the truth about his pet project—that is, that no matter how much of his money he plows into the project, he’s going to get a clunker of a vehicle that won’t be any good at either of its two incompatible roles—because he’ll simply fire you and hire someone who will tell him what he wants to hear.

Nor do you have the option of sitting him down and getting him to face what’s behind his own unexamined desires and expectations, so that he might notice that his fixation on having a flying car is an emotionally charged hangover from age eight, when he daydreamed about having one to help him cope with the miserable, bully-ridden public school system in which he was trapped for so many wretched years.

So you devote your working hours to finding the most rational, scientific, and utilitarian means to accomplish a pointless, useless, and self-defeating end. That’s crackpot realism.

You can make a great party game out of identifying crackpot realism—try it sometime—but I’ll leave that to my more enterprising readers.

What I want to talk about right now is one of the most glaring examples of crackpot realism in contemporary industrial society. Yes, we’re going to talk about space travel again.

No question, a fantastic amount of scientific, technological, and engineering brilliance went into the quest to insert a handful of human beings for a little while into the lethal environment of deep space and bring them back alive.

Visit one of the handful of places on the planet where you can get a sense of the sheer scale of a Saturn V rocket, and the raw immensity of the effort that put a small number of human bootprints on the Moon is hard to miss. What’s much easier to miss is the whopping irrationality of the project itself.

(I probably need to insert a parenthetical note here. Every time I blog about the space program, I can count on fielding at least one comment from some troll who insists that the Moon landings never happened.

It so happens that I’ve known quite a few people who worked on the Apollo project; some of them have told me their stories and shown me memorabilia from what was one of the proudest times of their lives; and given a choice between believing them, and believing some troll who uses a pseudonym to hide his identity but can’t hide his ignorance of basic historical and scientific facts, well, let’s just say the troll isn’t going to come in first place. Nor is his comment going to go anywhere but the trash. ‘Nuf said.)

Outer space simply isn’t an environment where human beings can survive for long.

It’s near-perfect vacuum at a temperature a few degrees above absolute zero; it’s full of hard radiation streaming out from the huge unshielded fusion reactor at the center of our solar system; it’s also got chunks of rock, lots of them, whizzing through it at better than rifle-bullet speeds; and the human body is the product of two billion years of evolutionary adaptation to environments that have the gravity, atmospheric pressure, temperature ranges, and other features that are found on the Earth’s surface and, as far as we know, nowhere else in the universe.

A simple thought experiment will show how irrational the dream of human expansion into space really is.

Consider the harshest natural environments on this planet—the stark summits of the Himalayas; the middle of the East Antarctic ice sheet in winter; the bleak Takla Makan desert of central Asia, the place caravans go to die; the bottom of the Marianas Trench, where the water pressure will reduce a human body to paste in seconds.

Nowhere in the solar system, or on any of the exoplanets yet discovered by astronomers, is there a place that’s even as well suited to human life as the places I’ve just named.

Logically speaking, before we try to settle the distant, airless, radiation-blasted deserts of Mars or the Moon, wouldn’t it make sense first to build cities on the Antarctic ice or in the lightless depths of the ocean?

With one exception, in fact, every one of the arguments that has been trotted out to try to justify the settlement of Mars can be applied with even more force to the project of settling Antarctica.

In both cases, you’ve got a great deal of empty real estate amply stocked with mineral wealth, right? Antarctica, though, has a much more comfortable climate than Mars, not to mention abundant supplies of water and a breathable atmosphere, both of which Mars lacks.

Furthermore, it costs a lot less to get your colonists to Antarctica, they won’t face lethal irradiation on the way there, and there’s at least a chance that you can rescue them if things go very wrong.

If in fact it made any kind of sense to settle Mars, the case for settling Antarctica would be far stronger.

So where are the grand plans, lavishly funded by clueless tech-industry godzillionaires, to settle Antarctica? Their absence shows the one hard fact about settling outer space that next to nobody is willing to think about: it simply doesn’t make sense.

The immense financial and emotional investments we’ve made in the notion of settling human beings on other planets or in outer space itself would be Exhibit A in a museum of crackpot realism.

This is where the one exception I mentioned above comes in—the one argument for settling Mars that can’t also be made for settling Antarctica. This is the argument that a Martian colony is an insurance policy for our species.

If something goes really wrong on Earth, the claim goes, and human beings die out here, having a settlement on Mars gives our species a shot at survival.

Inevitably, given the present tenor of popular culture, you can expect to hear this sort of logic backed up by embarrassingly bad arguments. I’m thinking, for example, of a rant by science promoter Neil DeGrasse Tyson, who likes to insist that dinosaurs are extinct today because they didn’t have a space program.

We’ll assume charitably that Tyson spent long nights stargazing in his teen years, and so tended to doze off during his high school biology classes; no doubt that’s why he missed three very obvious facts about dinosaurs.

The first is that they were the dominant life forms on land for well over a hundred million years, which is a good bit longer than our species shows any likelihood of being able to hang on; the second is that the vast majority of dinosaur species went extinct for ordinary reasons—there were only a very modest number of dinosaur species around when the Chicxulub meteorite came screaming down out of space to end the Cretaceous Period; and the third is that dinosaurs aren’t extinct—we call them birds nowadays, and in terms of number of species, rates of speciation, and other standard measures of evolutionary vigor, they’re doing quite a bit better than mammals just now.

Set aside the bad logic and the sloppy paleontology, though, and the argument just named casts a ruthlessly clear light on certain otherwise obscure factors in our contemporary mindset.

The notion that space travel gets its value as a way to avoid human extinction goes back a long ways. I recall a book by Italian journalist Oriana Falacci, compiling her interviews with leading figures in the space program during its glory days; she titled it If The Sun Dies, after the passionate comment along these lines by one of her interviewees.

Behind this, in turn, lies one of the profound and usually unmentioned fears that shapes the modern mind: the terror of deep time.

There’s a profound irony in the fact that the geologists who first began to figure out the true age of the Earth lived in western Europe in the early nineteenth century, when most people believed that the world was only some six thousand years old.

There have been plenty of cultures in recorded history that had a vision of time expansive enough to fit the facts of geological history, but the cultures of western Europe and its diaspora in the Americas and Australasia were not among them.

Wedded to literalist interpretations of the Book of Genesis, and more broadly to a set of beliefs that assigned unique importance to human beings, the people who faced the first dim adumbrations of the vastness of Earth’s long history were utterly unprepared for the shock, and even less ready to have the first unnerving guesses that the Earth might be millions of years old replaced by increasingly precise measurements that gave its age in the billions of years, and that of the universe in the trillions.

The brutal nature of the shock that resulted shouldn’t be underestimated.

A society that had come to think of humanity as creation’s darlings, dwelling in a universe with a human timescale, found itself slammed facefirst into an unwanted encounter with the vast immensities of past and future time. That encounter had a great many awkward moments.

The self-defeating fixation of evangelical Christians on young-Earth creationism can be seen in part as an attempt to back away from the unwelcome vista of deep time; so is the insistence, as common outside Christian churches as within them, that the world really will end sometime very soon and spare us the stress of having to deal with the immensity of the future.

For that matter, I’m not sure how many of my readers know how stunningly unwelcome the concept of extinction was when it was first proposed: if the universe was created for the benefit of human beings, as a great many people seriously argued in those days, how could there have been so many thousands of species that lived and died long ages before the first human being walked the planet?

Worse, the suspicion began to spread that the future waiting for humanity might not be an endless progression toward bigger and better things, as believers in progress insisted, or the end of the world followed by an eternity of bliss for the winning team, as believers in Christianity insisted, but extinction: the same fate as all those vanished species whose bones kept surfacing in geological deposits.

It’s in the nineteenth century that the first stories of human extinction appear on the far end of late Romanticism, just as the same era saw the first tales that imagined the history of modern civilization ending in decline and fall.

People read The Black Cloud and After London for the same rush of fascinated horror that they got from Frankenstein and Dracula, and with the same comfortable disbelief once the last page turned—but the same scientific advances that made the two latter books increasingly less believable made tales of humanity’s twilight increasingly more so.

It became fashionable in many circles to dismiss such ideas as mere misanthropy, and that charge still gets flung at anyone who questions current notions of humanity’s supposed future in space. It’s a curious fact that I tend to field such comments from science fiction writers, more than from anyone else just now.

A few years ago, when I sketched out a fictive history of the next ten billion years that included human extinction millions of years from now, SF writer David Brin took time out of his busy schedule to denounce it as “an infuriating paean to despair.” Last month’s post on the worlds that never were, similarly, fielded a spluttering denunciation by S.M. Stirling.

It was mostly a forgettable rehash of the standard arguments for an interstellar future—arguments, by the way, that could be used equally well to justify continued faith in perpetual motion—but the point I want to raise here is that Stirling’s sole reaction to Aurora, Kim Stanley Robinson’s brilliant fictional critique of the interstellar-travel mythos, was to claim dismissively that Robinson must have suffered an attack of misanthropy.

Some of my readers may remember Verruca Salt, the archetypal spoiled brat in Willy Wonka and the Chocolate Factory.

When her father didn’t give her whatever she happened to want, her typical response was to shriek, “You don’t love me!” I think of that whenever somebody trots out the accusation of misanthropy in response to any realistic treatment of the limits that will shape the human future.

It’s not misanthropy to point out that humanity isn’t going to outlast the sun or leap breezily from star to star; it’s simple realism, just as reminding someone that they will inevitably die is an expression not of hatred but of common sense.

You, dear reader, will die someday. So will I, and so will every other human being.

That fact doesn’t make our lives meaningless; quite the contrary, it’s when we come to grips with the fact of our own mortality that we have our best shot at achieving not only basic maturity, but that condition of reflective attention to meaning that goes by the name of wisdom.

In exactly the same way, recognizing that humanity will not last forever—that the same Earth that existed and flourished long before our species came on the scene will exist and flourish long after our species is gone—might just provide enough of a boost of wisdom to help us back away from at least some of the more obviously pigheaded ways we’re damaging the biosphere of the only planet on which we can actually live.

There’s something else to be found in the acceptance of our collective mortality, though, and I’m considering exploring it in detail over the months ahead.

Grasp the fact that our species is a temporary yet integral part of the whole system we call the biosphere of the Earth, and it becomes a good deal easier to see that we are part of a story that didn’t begin with us, won’t end with us, and doesn’t happen to assign us an overwhelmingly important role.

Traumatic though this may be for the Verruca Saltish end of humanity, with its distinctly overinflated sense of importance, there’s much to be gained by ditching the tantrums, coming to terms with our decidedly modest place in the cosmos, and coming to understand the story in which we play our small but significant part.

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It's all temporary

SUBHEAD: Media and the devices that present content are transient like everything else. Get used to it.

By Juan Wilson on 13 March 2017 for Island Breath -
(http://islandbreath.blogspot.com/2017/03/its-all-temporary.html)


Image above: Photo of obsolete and/or broken technologies I keep on a windowsill to remind me of the transience of media reality. Photo by Juan Wilson.

The last few weeks I've been trying to replay some video tapes I shot in the years between 1997 and 2007. In that decade I was using Sony Hi8 Digital video camera. I had about almost a hundred hours plus of recordings. My kids, my wife's kids, living in Panama NY, visiting Panama Central America. Living on Maui, renting a house on the Big Island, moving to Kauai, etc.

Problem was my older SonyHi8 was dead and the newer Digital Hi8 wasn't tracking the tape well. I went to Ebay and found  an "as good as new" digital Hi8. It tore three tapes in half. I returned it and went back to my newer Hi8. After lots of coaxing I got it to go and have been able to view a few of the tapes.

Bottom line. You cannot go back very far relying on digital recordings or records of your life to be there when you want them in the future.

I have kept libraries of records from various digital technologies going back to the 1960's and unless I get a special pass for the "Old Digital Devices section of the Smithsonian Museum I will likely never see or hear the content of those libraries.

For example, in the late 1960's I was studying architecture at the Cooper Union in New York. They had a new computer center that took up two classrooms that ran Digital Equipment Corporation (DEC) state of the art PDP-8 computer. It compiled programs and read data off punch cards and would type the results on a 17" wide chain driven impact printer.

A classmate, Ralph Lerner and I wrote structural engineering programs in Fortran IV and could calculate structural engineering stresses on various frames by punching cards describing loads and their arrangement on the frame. The impact printer would draw the frame and note results of calculations.

I have a library of all the programs Ralph and I wrote. They have weathered the 50 years but I have no DEC computer to compile programs and run data cards through. In fact DEC corporation, once number the number two to IBM, no longer exists. I will never see those programs run again.

Later, in the early 1980s working in the field of architecture at Davis Brody & Associates I used DEC VAX-11 computer. The VAX was the first widely used 32-bit minicomputer.

The VAX-11 was capable of running serious Computer Aided Design software. Davis-Brody had a version of G3, the program designed for General Electric to do engineering drawings for such things as nuclear power plants.

Our first workstation cost $250,000. AutoCad today costs about 1% of that today.

I still have DEC 1" compact tapes that contain the G3 program and the macro-programs we developed specifically for architecture. Those tapes will never see a VAX-11 again.

I also have 5.25" floppies from PC computers as well as 3.5" floppies used by Amiga and Macintosh machines. I even have an bunch of 100mb ZIP discs. None of these will be spun up.

I won't go into the various other formats for work and entertainment I have kept remnants of, but the list goes on.

What has worked of all those decades? Reel-to-reel and LP records. Machines to play those media are still being manufactured. I think the most durable recording technology in my lifetime has been the cassette audio tape. I have several hundred that go back to the early 1970s and they still sound fresh. I think that's in part because I recorded most on high-end tapes.

It is getting harder to find cassette tape recorders, but they are still available. If you want to hear your tapes into the future get a good one like the Tascam CC-222 mk IV.

I received a CC0-222 from my wife Linda for my 70th birthday two years ago. It's a wonderful machine - a high end cassette that will dub a tape to CD or a CD to tape. The later path might be in order after you read the article below on CD disintegration.



Your CD's are rotting

SUBHEAD: Certifying a CD-ROM did not place any requirement on the chemical or physical stability of the disc.

By Cory Doctorow on 11 March 2017 for Boing Boing -
(http://boingboing.net/2017/03/11/bitrot.html)


Image above: A CD of questionable veracity. From original article.

In 2009, the Library of Congress commissioned a research report into the degradation of CD-ROMs in storage as a way of assessing the integrity of the media in its collection: the news isn't pretty.

The standards for certifying a CD-ROM did not "place any requirement on the chemical or physical stability of the disc," so depending on the manufacturer and process, the discs you've put away on shelves may have wildly different material properties.

The study involved taking a trove of discarded/duplicate CD-ROMs from the LoC's collection and subjecting them to "accelerated aging" processes to see how many errors emerged as the media aged. Keeping discs dry and cool helped reduce error rates, but even so there's a lot of bitrot there.

One thing that's happened since this study is an acceleration in the plunging costs of online storage -- HDDs and SSDs -- and cloud services, which are all "live" media, regulated by microcontrollers that continuously poll their storage media for degradation, marking off sectors as bad when they turn and copying their data to still-good sectors before it becomes unreadable.

This is a major difference between today's state of affairs and the long, awkward adolescence of mass storage, when keeping all your data online was prohibitively expensive, which meant that some fraction of your archives would end up on offline/nearline media, from tapes to CDs to Zip and Jazz and floppy discs.

All media is subject to entropy, but offline/nearline media is not easily hedged against the Second Law of Thermodynamics with measures like continuous scheduled offsite backups and continuous defect-scanning.
The results of this study show that individual CD-ROM life expectancies in a large collection such as that held by the Library of Congress can be expected to cover a wide range. In addition, the BLER degradation rate of individual discs will be dependant on the environmental conditions to which the disc is exposed. Selecting optimal conditions for temperature and relative humidity in facilities where compact discs are stored can be expected to have a significant impact on service life.

Other factors not covered in this study, such as handling, labeling, and exposure to certain materials or chemicals, also affect service life and must be considered as part of a comprehensive approach to preserving digital information on compact disc media.
The test population selected for this experiment was extremely diverse; representing discs constructed using different materials, from different manufacturers and record labels.

Although the selected discs covered a relatively limited period of manufacture the wide distribution of life expectancies demonstrates the effect of these varied construction parameters on disc life. 10% of the discs failed at an estimated life of less than 25 years, including 6 discs (5%) that failed too early to obtain meaningful data or a meaningful lifetime estimate. 23 discs (16%) had insufficient increase in errors during the test, and thus, had infinite lifetimes, by the standards of the ISO test method. These results illustrate why it is so difficult to make broad generalizations about the lifetime of optical media.

The Library of Congress plans to conduct analyses of the material composition of selected discs from both this study and the on-going Natural Aging Study to look for trends in failure modes as they relate to the chemistry of the disc. An understanding of these failure modes can help in identifying discs that are prone to early failure so that the data can be transferred to more stable media before they reach end-of-life.
COMPACT DISC SERVICE LIFE: AN INVESTIGATION OF THE ESTIMATED SERVICE LIFE OF PRERECORDED COMPACT DISCS (CD-ROM) [Chandru J. Shahani, Michele H. Youket and Norman Weberg/Library of Congress]

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An Afternoon in early Autumn

SUBHEAD: If the Earth's lifetime was measured as one year, then all human history would be half a minute.

By John Michael Greer on 12 October 2016 for the Archdruid Report -
(http://thearchdruidreport.blogspot.com/2016/10/an-afternoon-in-early-autumn.html)


Image above: The artist's concept depicts Kepler-186f , the first validated Earth-size planet to orbit a distant star in the habitable zone. From NASA Ames/SETI Institute/JPL-Caltech (http://www.nasa.gov/ames/kepler/nasas-kepler-discovers-first-earth-size-planet-in-the-habitable-zone-of-another-star).

I think it was the late science writer Stephen Jay Gould who coined the term “deep time” for the vast panorama opened up to human eyes by the last three hundred years or so of discoveries in geology and astronomy. It’s a useful label for an even more useful concept.

In our lives, we deal with time in days, seasons, years, decades at most; decades, centuries and millennia provide the yardsticks by which the life cycles of human societies—that is to say, history, in the usual sense of that word—are traced.

Both these, the time frame of individual lives and the time frame of societies, are anthropocentric, as indeed they should be; lives and societies are human things and require a human measure.

When that old bamboozler Protagoras insisted that “man is the measure of all things,” though, he uttered a subtle truth wrapped in a bald-faced lie.*

The subtle truth is that since we are what we are—that is to say, social primates whow have learned a few interesting tricks—our capacity to understand the cosmos is strictly limited by the perceptions that human nervous systems are capable of processing and the notions that human minds are capable of thinking.

The bald-faced lie is the claim that everything in the cosmos must fit inside the perceptions human beings can process and the notions they can think.

(*No, none of this has to do with gender politics. The Greek language, unlike modern English, had a common gender-nonspecific noun for “human being,” anthropos, which was distinct from andros, “man,” and gyne, “woman.” The word Protagoras used was anthropos.)

It took the birth of modern geology to tear through the veil of human time and reveal the stunningly inhuman scale of time that measures the great cycles of the planet on which we live.

Last week’s post The Myth of the Anthropocene sketched out part of the process by which people in Europe and the European diaspora, once they got around to noticing that the Book of Genesis is about the Rock of Ages rather than the age of rocks, struggled to come to terms with the immensities that geological strata revealed.

To my mind, that was the single most important discovery our civilization has made—a discovery with which we’re still trying to come to terms, with limited success so far, and one that I hope we can somehow manage to hand down to our descendants in the far future.

The thing that makes deep time difficult for many people to cope with is that it makes self-evident nonsense out of any claim that human beings have any uniquely important place in the history of the cosmos. That wouldn’t be a difficulty at all, except that the religious beliefs most commonly held in Europe and the European diaspora make exactly that claim.

That last point deserves some expansion here, not least because a minority among the current crop of “angry atheists” have made a great deal of rhetorical hay by insisting that all religions, across the board, point for point, are identical to whichever specific religion they themselves hate the most—usually, though not always, whatever Christian denomination they rebelled against in their adolescent years.

That insistence is a fertile source of nonsense, and never so much as when it turns to the religious implications of time.

The conflict between science and religion over the age of the Earth is a purely Western phenomenon. Had the great geological discoveries of the eighteenth and nineteenth centuries taken place in Japan, say, or India, the local religious authorities wouldn’t have turned a hair.

On the one hand, most Asian religious traditions juggle million-year intervals as effortlessly as any modern cosmologist; on the other, Asian religious traditions have by and large avoided the dubious conviction, enshrined in most (though not all) versions of Christianity, that the Earth and everything upon it exists solely as a stage on which the drama of humanity’s fall and redemption plays out over a human-scaled interval of time.

The expansive Hindu cosmos with its vast ever-repeating cycles of time, the Shinto concept of Great Nature as a continuum within which every category of being has its rightful place, and other non-Western worldviews offer plenty of room for modern geology to find a home.

Ironically, though, the ongoing decline of mainstream Christianity as a cultural influence in the Western world hasn’t done much to lessen the difficulty most people in the industrial world feel when faced with the abysses of deep time.

The reason here is simply that the ersatz religion that’s taken the place of Christianity in the Western imagination also tries to impose a rigid ideological scheme not only on the ebb and flow of human history, but on the great cycles of the nonhuman cosmos as well.

Yes, that would be the religion of progress—the faith-based conviction that human history is, or at least ought to be, a straight line extending onward and upward from the caves to the stars.

You might think, dear reader, that a belief system whose followers like to wallow in self-praise for their rejection of the seven-day creation scheme of the Book of Genesis and their embrace of deep time in the past would have a bit of a hard time evading its implications for the future. Let me assure you that this seems to give most of them no trouble at all.

From Ray Kurzweil’s pop-culture mythology of the Singularity—a straightforward rewrite of Christian faith in the Second Coming dolled up in science-fiction drag—straight through to the earnest space-travel advocates who insist that we’ve got to be ready to abandon the solar system when the sun turns into a red giant four billion years from now, a near-total aversion to thinking about the realities deep time ahead of us is astonishingly prevalent among those who think they’ve grasped the vastness of Earth’s history.

I’ve come to think that one of the things that feeds this curious quirk of collective thinking is a bit of trivia to be found in a great many books on geology and the like—the metaphor that turns the Earth’s entire history into a single year, starting on January 1 with the planet’s formation out of clouds of interstellar dust and ending at midnight on December 31, which is always right now.

That metaphor has been rehashed more often than the average sitcom plot. A quick check of the books in the study where I’m writing this essay finds three different versions, one written in the 1960s, one in the 1980s, and one a little more than a decade ago.

The dates of various events dance around the calendar a bit as new discoveries rewrite this or that detail of the planet’s history, to be sure; when I was a dinosaur-crazed seven-year-old, the Earth was only three and a half billion years old and the dinosaurs died out seventy million years ago, while the latest research I know of revises those dates to 4.6 billion years and 65 million years respectively, moving the date of the end-Cretaceous extinction from December 24 to December 26—in either case, a wretched Christmas present for small boys. Such details aside, the basic metaphor remains all but unchanged.

There’s only one problem with it, but it’s a whopper. Ask yourself this: what has gotten left out of that otherwise helpful metaphor? The answer, of course, is the future.

Let’s imagine, by contrast, a metaphor that maps the entire history of life on earth, from the first living thing on this planet to the last, onto a single year.

We don’t know exactly when life will go extinct on this planet, but then we don’t know exactly when it emerged, either; the most recent estimate I know of puts the origin of terrestrial life somewhere a little more than 3.7 billion years ago, and the point at which the sun’s increasing heat will finally sterilize the planet somewhere a little more than 1.2 billion years from now.

Adding in a bit of rounding error, we can set the lifespan of our planetary biosphere at a nice round five billion years.

On that scale, a month of thirty days is 411 million years, a single day is 13.7 million years, an hour is around 571,000 years, a minute is around 9514 years, and a second is 158 years and change.

Our genus, Homo,* evolved maybe two hours ago, and all of recorded human history so far has taken up a little less than 32 seconds.

(*Another gender-nonspecific word for “human being,” this one comes from Latin, and is equally distinct from vir, “man,” and femina, “woman.” English really does need to get its act together.)

That all corresponds closely to the standard metaphor. The difference comes in when you glance at the calendar and find out that the present moment in time falls not on December 31 or any other similarly momentous date, but on an ordinary, undistinguished day—by my back-of-the-envelope calculation, it would be September 26.

I like to imagine our time, along these lines, as an instant during an early autumn afternoon in the great year of Earth’s biosphere. Like many another late September day, it’s becoming uncomfortably hot, and billowing dark clouds stand on the horizon, heralds of an oncoming storm.

We human mayflies, with a lifespan averaging maybe half a second, dart here and there, busy with our momentary occupations; a few of us now and then lift our gaze from our own affairs and try to imagine the cold bare fields of early spring, the sultry air of summer evenings, or the rigors of a late autumn none of us will ever see.

With that in mind, let’s put some other dates onto the calendar. While life began on January 1, multi-cellular life didn’t get started until sometime in the middle of August—for almost two-thirds of the history of life, Earth was a planet of bacteria and blue-green algae, and in terms of total biomass, it arguably still is.

The first primitive plants and invertebrate animals ventured onto the land around August 25; the terrible end-Permian extinction crisis, the worst the planet has yet experienced, hit on September 8; the dinosaurs perished in the small hours of September 22, and the last ice age ended just over a minute ago, having taken place over some twelve and a half minutes.

Now let’s turn and look in the other direction. The last ice age was part of a glacial era that began a little less than two hours ago and can be expected to continue through the morning of the 27th—on our time scale, they happen every two and a half weeks or so, and the intervals between them are warm periods when the Earth is a jungle planet and glaciers don’t exist.

Our current idiotic habit of treating the atmosphere as a gaseous sewer will disrupt that cycle for only a very short time; our ability to dump greenhouse gases into the atmosphere will end in less than a second as readily accessible fossil fuel reserves are exhausted, and it will take rather less than a minute thereafter for natural processes to scrub the excess CO2 from the atmosphere and return the planet’s climate to its normal instability.

Certain other consequences of our brief moment of absurd extravagance will last longer.

On our timescale, the process of radioactive decay will take around half an hour (that is to say, a quarter million years or so) to reduce high-level nuclear waste all the way to harmlessness.

It will take an interval of something like the same order of magnitude before all the dead satellites in high orbits have succumbed to the complex processes that will send them to a fiery fate in Earth’s atmosphere, and quite possibly longer for the constant rain of small meteorites onto the lunar surface to pound the Apollo landers and other space junk there to unrecognizable fragments.

Given a few hours of the biosphere’s great year, though, everything we are and everything we’ve done will be long gone.

Beyond that, the great timekeeper of Earth’s biosphere is the Sun. Stars increase in their output of heat over most of their life cycle, and the Sun is no exception. The single-celled chemosynthetic organisms that crept out of undersea hot springs in February or March of the great year encountered a frozen world, lit by a pale white Sun whose rays gave far less heat than today; the oldest currently known ice age, the Cryogenian glaciation of the late Precambrian period, was apparently cold enough to freeze the oceans solid and wrap most of the planet in ice.

By contrast, toward the middle of November in the distant Neozoic Era, the Sun will be warmer and yellower than it is today, and glacial eras will likely involve little more than the appearance of snow on a few high mountains normally covered in jungle.

Thus the Earth will gradually warm through October and November. Temperatures will cycle up and down with the normal cycles of planetary climate, but each warm period will tend to be a little warmer than the last, and each cold period a little less frigid.

Come December, most of a billion years from now, as the heat climbs past one threshold after another, more and more of the Earth’s water will evaporate and, as dissociated oxygen and hydrogen atoms, boil off into space; the Earth will become a desert world, with life clinging to existence at the poles and in fissures deep underground, until finally the last salt-crusted seas run dry and the last living things die out.

And humanity? The average large vertebrate genus lasts something like ten million years—in our scale, something over seventeen hours. As already noted, our genus has only been around for about two hours so far, so it’s statistically likely that we still have a good long run ahead of us.

I’ve discussed in these essays several times already the hard physical facts that argue that we aren’t going to go to the stars, or even settle other planets in this solar system, but that’s nothing we have to worry about.

Even if we have an improbably long period of human existence ahead of us—say, the fifty million years that bats of the modern type have been around, some three and a half days in our scale, or ten thousand times the length of all recorded human history to date—the Earth will be burgeoning with living things, and perfectly capable of supporting not only intelligent life but rich, complex, unimaginably diverse civilizations, long after we’ve all settled down to our new careers as fossils.

This does not mean, of course, that the Earth will be capable of supporting the kind of civilization we have today. It’s arguably not capable of supporting that kind of civilization now.

Certainly the direct and indirect consequences of trying to maintain the civilization we’ve got, even for the short time we’ve made that attempt so far, are setting off chains of consequences that don’t seem likely to leave much of it standing for long.

That doesn’t mean we’re headed back to the caves, or for that matter, back to the Middle Ages—these being the two bogeymen that believers in progress like to use when they’re trying to insist that we have no alternative but to keep on stumbling blindly ahead on our current trajectory, no matter what.

What it means, instead, is that we’re headed toward something that’s different—genuinely, thoroughly, drastically different. It won’t just be different from what we have now; it’ll also be different from the rigidly straight-line extrapolations and deus ex machina fauxpocalypses that people in industrial society like to use to keep from thinking about the future we’re making for ourselves.

Off beyond the dreary Star Trek fantasy of metastasizing across the galaxy, and the equally hackneyed Mad Max fantasy of pseudomedieval savagery, lies the astonishing diversity of the future before us: a future potentially many orders of magnitude longer than all of recorded history to date, in which human beings will live their lives and understand the world in ways we can’t even imagine today.

It’s tolerably common, when points like the one I’ve tried to make here get raised at all, for people to insist that paying attention to the ultimate fate of the Earth and of our species is a recipe for suicidal depression or the like. With all due respect, that claim seems silly to me.

Each one of us, as we get out of bed in the morning, realizes at some level that the day just beginning will bring us one step closer to old age and death, and yet most of us deal with that reality without too much angst.

In the same way, I’d like to suggest that it’s past time for the inmates of modern industrial civilization to grow up, sprout some gonads—either kind, take your pick—and deal with the simple, necessary, and healthy realization that our species is not going to be around forever.

Just as maturity in the individual arrives when it sinks in that human life is finite, collective maturity may just wait for a similar realization concerning the life of the species.

That kind of maturity would be a valuable asset just now, not least because it might help us grasp some of the extraordinary possibilities that will open up as industrial civilization finishes its one-way trip down the chute marked “decline and fall” and the deindustrial future ahead of us begins to take shape.

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Time and Age

SUBHEAD: Reasons why time seems to go by more quickly as we get older.

By Christian Yates on 12 August 2016  in AlterNet  -
(http://www.alternet.org/personal-health/why-time-seems-go-more-quickly-we-get-older)


Image above: Detail of illustration of Father Time. From (http://mysticinvestigations.com/supernatural/father-time-watch/).

When we were children, the summer holidays seemed to last forever, and the wait between Christmases felt like an eternity. So why is that when we get older, the time just seems to zip by, with weeks, months and entire seasons disappearing from a blurred calendar at dizzying speed?

This apparently accelerated time travel is not a result of filling our adult lives with grown-up responsibilities and worries. Research does in fact seem to show that perceived time moves more quickly for older peoplemaking our lives feel busy and rushed.

There are several theories which attempt to explain why our perception of time speeds up as we get older. One idea is a gradual alteration of our internal biological clocks. The slowing of our metabolism as we get older matches the slowing of our heartbeat and our breathing. Children’s biological pacemakers beat more quickly, meaning that they experience more biological markers (heartbeats, breaths) in a fixed period of time, making it feel like more time has passed.

Another theory suggests that the passage of time we perceive is related to the amount of new perceptual information we absorb. With lots of new stimuli our brains take longer to process the information so that the period of time feels longer.

This would help to explain the “slow motion perception” often reported in the moments before an accident. The unfamiliar circumstances mean there is so much new information to take in.

In fact, it may be that when faced with new situations our brains record more richly detailed memories, so that it is our recollection of the event that appears slower rather than the event itself. This has been shown to be the case experimentally for subjects experiencing free fall.

But how does this explain the continuing shortening of perceived time as we age? The theory goes that the older we get, the more familiar we become with our surroundings. We don’t notice the detailed environments of our homes and workplaces.

For children, however, the world is an often unfamiliar place filled with new experiences to engage with. This means children must dedicate significantly more brain power re-configuring their mental ideas of the outside world. The theory suggests that this appears to make time run more slowly for children than for adults stuck in a routine.


So the more familiar we become with the day-to-day experiences of life, the faster time seems to run, and generally, this familiarity increases with age.

The biochemical mechanism behind this theory has been suggested to be the release of the neurotransmitter dopamine upon the perception of novel stimuli helping us to learn to measure time. Beyond the age of 20 and continuing into old age, dopamine levels drop making time appear to run faster.

But neither of these theories seem to tie in precisely with the almost mathematical and continual rate of acceleration of time.

The apparent reduction of the length of a fixed period as we age suggests a “logarithmic scale” to time. Logarithmic scales are used instead of traditional linear scales when measuring earthquakes or sound. Because the quantities we measure can vary to such huge degrees, we need a wider ranging measurement scale to really make sense of what is happening. The same is true of time.

On the logarithmic Richter Scale (for earthquakes) an increase from a magnitude ten to 11 doesn’t correspond to an increase in ground movement of 10% as it would do in a linear scale. Each increment on the Richter scale corresponds to a ten-fold increase in movement.

Toddler time
But why should our perception of time also follow a logarithmic scaling? The idea is that we perceive a period of time as the proportion of time we have already lived through. To a two-year-old, a year is half of their life, which is why it seems such an extraordinary long period of time to wait between birthdays when you are young.

To a ten-year-old, a year is only 10% of their life, (making for a slightly more tolerable wait), and to a 20-year-old it is only 5%. On the logarithmic scale, for a 20-year-old to experience the same proportional increase in age that a two-year-old experiences between birthdays, they would have to wait until they turned 30. Given this view point it’s not surprising that time appears to accelerate as we grow older.

We commonly think of our lives in terms of decades – our 20s, our 30s and so on – which suggests an equal weight to each period. However, on the logarithmic scale, we perceive different periods of time as the same length. The following differences in age would be perceived the same under this theory: five to ten, ten to 20, 20 to 40 and 40 to 80.

I don’t wish to end on a depressing note, but the five-year period you experienced between the ages of five and ten could feel just as long as the period between the ages of 40 and 80.

So get busy. Time flies, whether you’re having fun or not. And it’s flying faster and faster every day.

• Christian Yates is a Lecturer in Mathematical Biology, University of Bath.

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