Showing posts with label proof. Show all posts
Showing posts with label proof. Show all posts

Friday, May 9, 2025

Margaret Mead's Sign of Civilization from Sustainable Human


A student once asked the renowned anthropologist Margaret Mead what she considered the first sign of civilization in a culture.

The student expected an answer about tools—fishhooks, clay pots, grinding stones. But Mead didn’t mention artifacts. She mentioned a bone.

The first sign of civilization, she said, is a healed femur.

In the wild, if an animal breaks its leg, it dies. It can’t run from predators, can’t search for food or water. A broken leg is a death sentence. No animal survives long enough for the bone to mend.

But a healed femur tells a different story.

It tells us that someone stopped. Someone noticed. Someone stayed with the injured. Someone bound up the wound, carried the person to safety, brought them food and water, and protected them through the long, painful process of healing.

A healed bone is more than biology. It’s evidence of care. Of compassion. Of community.

It’s easy to measure progress in tools, technologies, and towers. But true civilization begins when we choose to care for someone who can offer us nothing in return.

In that quiet act of empathy—of tending to the wounded, of staying by someone’s side through pain—we find the roots of humanity.

Civilization didn’t begin with invention. It began with compassion.
It began when someone said, “Your pain is my concern too.”

So maybe the question isn’t how advanced we are.
Maybe the real question is: How well do we care for each other when it matters most?

Stories from the marvelous organization Sustainable Human:
https://sustainablehuman.org/

Sunday, January 9, 2022

Climate Catastrophe Change In A Chart

UK climate data scientist has charted the monthly/yearly change in global temperature from 1851 to 2020. We have always known it is not good news and here is the chart...


https://twitter.com/neilrkaye

Friday, September 17, 2021

BEAUTY: Photography--Jessica Wynne

The images photographer Jessica Wynne captures of mathematician's chalkboards are amazing...

Currently on view at the Edwynn Houk Gallery in New York City, her Do Not Erase series has an accompanying press release which explains these documented designs beautifully.

Edwynn Houk Gallery is pleased to announce our inaugural exhibition of artworks by Jessica Wynne (American, b. 1972), on view from 2 September – 9 October 2021. The show includes medium- and large-scale photographs from the artist’s newest body of work, images of mathematicians’ chalkboards and the formulas scribbled and erased on them.

Do Not Erase contemplates the meaning, emotion, and energy of symbols. Her photographs— which can easily be mistaken for three-dimensional chalkboards— illuminate the narrative, linguistic, and visionary elements of these representations, providing timeless meditation on the abstraction and intimacy of visual expression.

Wynne studied at the San Francisco Art Institute and Yale University before moving to New York City in 1999. She was first introduced to the beauty of chalkboards through her neighbors Amie Wilkinson and Benson Farb, mathematics professors from the University of Chicago. Intrigued by the imagery she saw on these boards, Wynne directed her focus on capturing—rather than deciphering—the meaning and beauty of these symbols. Reminiscent of Cy Twombly’s “blackboard” paintings and Brice Marden’s serpentine Letters canvases, Wynne’s blackboards illuminate the power of the whirling web of shapes, numbers, and calculations scribbled in the heat of discovery.

For Wynne, the poetic and the rational are not mutually exclusive. While the formulas on each board are communicated in highly specialized languages from abstruse subfields such as knot theory, combinatorics, and ergodic theory, Wynne's work embraces the visual sensuality and intuitive impression of these complex calculations, linking them to the timeless lineage of artistry and writing: cave paintings, hieroglyphics, and graffiti.

Mathematicians "see images first, not words. They see pictures before meaning," Wynne observes. This relationship between image and thought is one of the primary areas of investigation for her work. It is striking that mathematicians, unlike many scientists, continue to work on chalkboards rather than computers, and Wynne's art explores the aspects of their communication that visual artists have shared throughout time: primal, intimate, and transcendent exchange.

Each mystery unravels itself through unique formal qualities. In some of the chalkboards Wynne represents, the black expanse is riddled with Greek letters, punctuation notations, and sinuous scrawls and loops, evocative of a patterned tapestry or calligraphic scroll. Others meditate on a single, pared down shape or orderly sequence of lines. Foggy mists left behind by an eraser provide a recurrent theme throughout the series, the puffs of opaque powder testifying to the rhythmic bursts of thought and explosions of clarity. Despite the formal and intellectual diversity Wynne's work showcases, each of her chalkboards is united through an exploration of the relationship between form and expression.



https://jessicawynne.com/
https://www.houkgallery.com/exhibitions/85-jessica-wynne-do-not-erase/works/

Wednesday, February 3, 2021

The Economy Does Much Better Under Democrats. Why? by David Leonhardt

Why Are Republican Presidents So Bad for the Economy?
G.D.P., jobs and other indicators have all risen more slowly under Republicans for nearly the past century.

By David Leonhardt | Graphics by Yaryna Serkez
Mr. Leonhardt is a senior writer at The Times. Ms. Serkez is a writer and graphics editor for Opinion.

Feb. 2, 2021


A president has only limited control over the economy. And yet there has been a stark pattern in the United States for nearly a century. The economy has grown significantly faster under Democratic presidents than Republican ones.

It’s true about almost any major indicator: gross domestic product, employment, incomes, productivity, even stock prices. It’s true if you examine only the precise period when a president is in office, or instead assume that a president’s policies affect the economy only after a lag and don’t start his economic clock until months after he takes office. The gap “holds almost regardless of how you define success,” two economics professors at Princeton, Alan Blinder and Mark Watson, write. They describe it as “startlingly large.”



Since 1933, the economy has grown at an annual average rate of 4.6 percent under Democratic presidents and 2.4 percent under Republicans, according to a Times analysis. In more concrete terms: The average income of Americans would be more than double its current level if the economy had somehow grown at the Democratic rate for all of the past nine decades. If anything, that period (which is based on data availability) is too kind to Republicans, because it excludes the portion of the Great Depression that happened on Herbert Hoover’s watch.


The six presidents who have presided over the fastest job growth have all been Democrats, as you can see above. The four presidents who have presided over the slowest growth have all been Republicans.

The big question, of course, is why. And there are not easy answers.

I have shown the data to multiple economists in recent weeks, and most say they are not sure how to explain it, at least not fully. “We don’t quite get why it’s the case,” Katherine Eriksson, a professor at the University of California, Davis, who specializes in economic history, told me. Marianne Wanamaker, an economist at the University of Tennessee, described the pattern to the graduate students in a class she teaches and asked for their thoughts. “They were sort of stumped,” she said.

Part of the answer surely involves coincidence. Some presidents, like Barack Obama and George W. Bush, take office when the economy is in a downturn, while others, like Harry Truman and Donald Trump, inherit a boom. Some, like Lyndon Johnson and Ronald Reagan, preside over military buildups; others, like Dwight Eisenhower and Bill Clinton, drawdowns. More broadly, the economy’s performance stems from millions of decisions made every day by businesses and consumers, many of which have little relation to government policy.

Still, the pattern is so strong and long-lasting that coincidence alone is unlikely to be the only explanation. Statistical noise, as Mr. Blinder and Mr. Watson wrote in their paper exploring the pattern, does not seem to be the answer.

What, then, are the most plausible theories?

First, it’s worth rejecting a few unlikely possibilities. Congressional control is not the answer. The pattern holds regardless of which party is running Congress. Deficit spending also doesn’t explain the gap: It is not the case that Democrats juice the economy by spending money and then leave Republicans to clean up the mess. Over the last four decades, in fact, Republican presidents have run up larger deficits than Democrats.

That leaves one broad possibility with a good amount of supporting evidence: Democrats have been more willing to heed economic and historical lessons about what policies actually strengthen the economy, while Republicans have often clung to theories that they want to believe — like the supposedly magical power of tax cuts and deregulation. Democrats, in short, have been more pragmatic.

When Franklin D. Roosevelt first ran for president, in 1932, he did not have a fully coherent economic plan. He sometimes argued that reducing the deficit was the key to ending the Depression. Above all, though, he called for “bold, persistent experimentation.” As he explained: “Take a method and try it: If it fails, admit it frankly and try another. But above all, try something.”

Over time, he and his advisers came to champion the ideas of John Maynard Keynes. In an economic downturn, when companies and households are caught in a vicious cycle of spending reductions, the government needs to step in. The Keynesian approach has shaped Democratic economic policy ever since.

It has made Democratic presidents much more aggressive in responding to crises than Republicans. Not only was Hoover passive in the face of the Depression, but the first George Bush was slow to fight the 1990-91 recession, and the second George Bush was slow to begin fighting the 2007-9 financial crisis. Mr. Obama and now President Biden, when faced with an economic crisis, have been much bolder.

Michael Strain, an economist at the American Enterprise Institute, a conservative think tank, told me that he believed the overall partisan pattern was mostly coincidence. But, he said, “It is certainly a defensible posture that in periods of economic distress Democrats are more concerned about jobs than Republicans.”

The past year has offered another case study. Mr. Trump repeatedly downplayed the coronavirus pandemic, and the country suffered. The economy would have experienced a downturn no matter who was president, but his scattered response aggravated the pandemic and the recession. In some other countries, life is much closer to normal. In the United States, Mr. Trump became the first president since Hoover to preside over a decline in employment.

The pragmatism gap isn’t only about recessions, either. Democrats have also been more aggressive about making job-creating investments — in medical research and clean energy, for example — that the private sector does not make when left to its own devices. Occasionally, a Democratic president has even been willing to go against type in order to encourage growth. Mr. Clinton, persuaded that deficit reduction could bring down interest rates and accelerate growth, scrapped some early spending plans and raised taxes. Interest rates fell, and the economy boomed.

Some past Republican presidents took a similarly pragmatic approach. Despite being conservative, both Eisenhower and Nixon were nonetheless comfortable using government to help the economy when needed. The elder George Bush signed a tax increase that contributed to the deficit reduction that, in turn, fueled the 1990s boom.

For the most part, however, Republican economic policy since 1980 has revolved around a single policy: large tax cuts, tilted heavily toward the affluent. There are situations in which tax cuts can lift economic growth, but they typically involve countries with very high tax rates. The United States has had fairly low tax rates for decades.

The evidence now overwhelmingly suggests that recent tax cuts have had only a modest effect on the economy. G.D.P. grew at virtually the same rate after the 2017 Trump tax cut as before it. If anything, the Clinton tax increase of 1993 has a better claim on starting a boom than any tax cut since.

One possibility is that the two parties are both responding to the interest groups that support and finance them, suggested Ms. Wanamaker, who worked in the White House Council of Economic Advisers during the Trump administration. But the Democratic-leaning groups (like labor unions and civil-rights organizations) may favor policies that lift broad-based economic growth, while Republican-leaning groups (like the wealthy) favor policies that mostly shift income toward themselves.

These explanations are almost certainly not complete. Much of the partisan gap remains mysterious. At the end of their academic paper on it, Mr. Blinder, a former Federal Reserve vice chairman and Clinton administration official, and Mr. Watson encourage other economists to study the issue.

But if the causes are not fully clear, the pattern is. The American economy has performed much better under Democratic administrations than Republican ones, over both the last few decades and the last century. And as Ms. Wanamaker said, “Administrations do certainly have the ability to affect economic outcomes.”


Link to original article:

Wednesday, March 30, 2016

Thursday, February 11, 2016

Proven: Black Holes and Gravitational Waves!

This is fantastic news. Just think: if we could come to an understanding of dark matter, there's no telling what we could accomplish and create.

Gravitational waves from black holes detected
By Pallab Ghosh
Science correspondent, BBC News



Scientists are claiming a stunning discovery in their quest to fully understand gravity.

They have observed the warping of space-time generated by the collision of two black holes more than a billion light-years from Earth.

The international team says the first detection of these gravitational waves will usher in a new era for astronomy.

It is the culmination of decades of searching and could ultimately offer a window on the Big Bang.

Being able to detect gravitational waves enables astronomers finally to probe what they call "dark Universe" - the majority part of the cosmos that is invisible to the light telescopes in use today.

Not only will they be able to investigate black holes and strange objects known as neutron stars (giant suns that have collapsed to the size of cities), they should also be able to "look" much deeper into the Universe - and thus farther back in time. It may even be possible eventually to sense the moment of the Big Bang.


Read the full article here:
http://www.bbc.com/news/science-environment-35524440

Friday, July 6, 2012

Proof Of Dark Matter!

This has been an amazing week for science! A new particle was announced, and now we have proof of dark matter!

Reported by Rachel Bayliss at COSMOS on-line:

LONDON: The fundamental ‘cosmic web’ of dark matter throughout the universe has finally been observed from Earth, confirming theories of how the universe was shaped.

“This result is a resounding confirmation of a key prediction of structure formation in the universe,” said Jörg Dietrich from University Observatory Munich, Germany, and lead author of the study published in Nature today.

“Not only did we for the first time see a dark matter filament directly, we also confirmed that it’s total mass [dark matter plus normal matter] and the amount of hot gas are in agreement with predictions.”


Galaxy clusters Abell 222 and Abell 223 connected by dark matter filament.
Yellow contours and blue shading are indicative of matter density.
Credit: Jörg Dietrich, University of Michigan/University Observatory Munich

DARK MATTER
Large cosmic structures, such as galaxies, exhibit gravitational affects that cannot be justified by the amount of normal matter present in the universe. A principle exists to describe this behavior and is known as the cold-dark-matter model, and it is the foundation of modern cosmology.

Within the model, vast quantities of dark matter, moving much slower than the speed of light (cold), must exist to explain the gravitational affects seen on normal matter.

As the name implies, dark matter cannot be observed in the traditional sense as it does not emit or absorb light at any significant level. However, its presence can be detected.

GRAVITATIONAL LENSING
“The technique we used is gravitational lensing,” said Dietrich. This is where light from, for example, a distant galaxy, is deflected and bent by huge gravitational fields generated by other similarly large objects. “It was widely believed that with current telescopes we would not be able to image dark matter filament with gravitational lensing.”

Dietrich and his team devised a method to boost the lensing signal sufficiently so that the dark matter filament between two clusters of galaxies could be observed with an 8m ground-based telescope.
“The key ingredient that made this result possible, is that we decided to study a very peculiar system of two massive galaxy clusters,” he said. These are called Abell 222 and Abell 223.

“Gravitational lensing is now allowing us to see parts of the universe that were previously invisible,” said astrophysicist Joanna Dunkley, from the University of Oxford, England, who was not involved in the study. “We already have plenty of indirect evidence that galaxy clusters trace a cosmic web of dark matter, but seeing this directly is an important step forward.”

THE COSMIC WEB
She added: “Our standard picture of cosmology tells us that filaments of invisible matter thread through the universe, and this bridge of dark matter connecting two clusters is exactly what we would expect.”

The research confirms that galaxy clusters form at the intersections of these vast filaments of dark matter.

Keen to develop this ground-breaking research further, Dietrich said, “We now want to study the interplay of dark matter density and galaxy population to get a better understanding of the mechanism that transforms galaxies from blue, star-forming spiral galaxies – which are the most common galaxies in filament – to red elliptical galaxies, which are the majority of galaxies in galaxy clusters.”

“The dark matter web makes up about a quarter of the universe,” Dunkley explained. “Being able to measure its morphology should help tell us more about how galaxies and clusters were formed, and may even give us a clue about what the dark matter itself is.” This in itself is a question that has been fascinating scientists for decades.

This research states that the underlying dark matter structure of the universe could comprise over half of all matter in existence. So developing it further is a must if scientists are to understand the elementary nature of the universe.

“We need to observe the lensing signal of more filaments to understand how special the one we found is,” Dietrich said. This will involve both in-depth statistical analysis of thousands of galaxy clusters, and a satellite mission to increase the possibilities of directly observing dark matter filaments.


http://www.cosmosmagazine.com/news/5765/scientists-shine-light-dark-matter