Posts Tagged ‘Galileo’
“Who controls the past controls the future. Who controls the present controls the past.”*…
As the U.S. prepares to celebrate its 250th birthday, Dan Friedman and Amanda Moore unpack the ways in which in Trump administration is working to control the country’s future by bulldozing its past. They open with a recounting of the marking of the 250th birthday of the Army (and of Donald Trump’s birthday) last June: several thousand came to watch the military parade; an estimated 5 million Americans held counter-protests…
… spectators had lined up for hours to get inside the security perimeter. Uniformed troops were handing out free bottles of Phorm Energy—a beverage launched nationally the month before by Anheuser-Busch and Dana White, a vocal Trump supporter who runs the Ultimate Fighting Championship. Phorm, which bills itself as the “ultimate energy drink,” is an official sponsor of America250, a government-funded nonprofit organizing a series of celebrations for the country’s 250th birthday, culminating on July 4 this year. When asked, a soldier explained he had been ordered to hand out the samples—despite Defense Department rules that bar the military from endorsing “a particular company, product, service, or website.” The Pentagon didn’t answer questions about this apparent violation…
But the parade was simply a warm-up…
… So it goes with the Trump administration’s approach to the country’s semiquincentennial. Congress is expected to allocate some $150 million for the festivities, but that’s not enough to fulfill Trump’s vision. So corporations with links to the president or his inner circle—UFC, Palantir, Oracle, Amazon, Coinbase—have signed on as sponsors, pouring in millions of dollars alongside companies like Chrysler, Coca-Cola, and General Mills…
… America250 and the White House insist they are planning nonpartisan festivities for all Americans, rather than creating a slush fund to throw the president militarized birthday parties and advance hard-right ideology. But in reality, American history is being subordinated to Trump’s cult of personality. The president’s face is suddenly everywhere—next to George Washington on America250-themed National Parks passes; alongside Abraham Lincoln and Teddy Roosevelt on giant banners hanging from federal buildings; on a $1 coin under consideration by the US Treasury.
Faced with sporadic pushback from a congressional commission overseeing America250 and from career officials at various agencies, Trump is now seeking to evade even these modest constraints. In December, he launched a new organization, Freedom 250, that could implement his most outlandish anniversary events without the inconvenience of legislative oversight or mandatory bipartisanship. For the president’s 80th birthday this year, Freedom 250 will help organize a UFC fight on the White House lawn.
The semiquincentennial is just one part of the commander in chief’s broader campaign to harness the mechanisms of the federal government to enforce his preferred version of the nation’s history and culture—a Trumpified presentation of America’s past and present. On the fifth anniversary of the January 6 insurrection, the administration even rolled out a taxpayer-funded webpage seeking to recast the day’s events as a patriotic effort to protest “the fraudulent election.” Three weeks later, Trump’s FBI seized hundreds of thousands of 2020 ballots and other election material from Georgia’s largest county. “TRUMP WON BIG,” the president declared the next morning. “Crooked Election!”
Since his inauguration last year, Trump has taken personal control of the Kennedy Center—reshaping its artistic programming, installing a MAGA-dominated board that claims to have renamed it in his honor, and then closing it for renovations. He’s railed against “OUT OF CONTROL” museums that he insists are too focused on “how bad Slavery was.” He has successfully pressured the Smithsonian Institution to review displays to ensure “unbiased content” and has extracted significant concessions over what top universities teach students. At his direction, the National Park Service has altered or removed scores of exhibits at parks and historic sites on topics including slavery, Native Americans, climate change, and even fossils. Trump acolytes are also leveraging federal dollars to stop local librarians and educators from sharing content they dislike.
Under the pretense of stamping out “woke” ideas and promoting patriotism, the White House is attempting to mandate uncritical acceptance of its own take on the American story, one that celebrates the martial feats of mostly white men and an imagined religious and ideological conformity that minimizes the fights, tribulations, and dissenters who have defined the country. It’s an effort that flies in the face of American ideals—and reality.
“In a pluralist democracy, there are invariably conflicts of values,” says Alexander Karn, a Colgate University historian who has written about the 250th anniversary. “To deny that messiness by seeking to erase the perspectives that don’t flatter a dominant group or help create a triumphal history is anti-egalitarian and, therefore, anti-democratic.”
Instead, Karn argues, “the road to a ‘more perfect Union,’ which is enshrined in the Constitution, runs through the past, and it depends on our willingness to confront our history in an honest and thoroughgoing way.”
Which is not the road we’re on…
[Friedman and Moore supply much more detail on the revisionist (in some case, “suppressionist”) efforts underway, and their relationship to the MAGA agenda. They conclude…]
…Rallies that celebrate a simplified, sanctified historical narrative have long been a favorite tool of autocrats. “Dictators brook no opposition, and this extends to the past,” says Karn, the Colgate historian. “When a dictator is intent on creating or sustaining a hierarchical social order, he will see to it that history abides.”
The military parade through Washington four days later proved to be a clumsy prelude for Trump’s very real efforts to deploy troops, along with heavily armed federal agents, on the streets of even more cities—often against the wishes of local officials. To justify sending the National Guard to Portland, the president made false claims about widespread violence, perhaps because Fox News repeatedly re-aired violent footage from 2020 as though it were part of the 2025 anti-ICE protests.
Since August, the Labor Department’s DC headquarters has displayed an America250-branded banner with a Mao-style image of Trump above the words “American Workers First.” The spectacle drew attention when National Guard members deployed by Trump were photographed beneath it—an image that captures the authoritarian ethos of his second term.
The troops, supposedly dispatched to Washington to fight crime, are now staying on in connection with the semiquincentennial. In an October court filing, the DC attorney general revealed that Guard leaders were planning for a prolonged deployment. “We know that America250 occurs this summer, and that will be a factor in determining the future of the mission,” a Guard commanding general wrote in an email included in the filing. In January, Trump officially extended the DC operation through the end of 2026, even as he bowed to court rulings blocking him from unleashing the armed forces on other parts of the country.
That Trump’s enthusiasm for the domestic use of troops is merging with America’s 250th festivities is almost too easy a metaphor. To celebrate the anniversary of a war sparked in part by the quartering of soldiers in US cities, the administration is lengthening a military occupation vehemently opposed by the local population.
A quarter-millennium later, amid “No Kings” protests and an unprecedented executive power grab, the arguments against tyranny that inspired American independence are alive and pressing. It seems worth asking whether America250 will celebrate the ideals of the country’s founders—or those of the monarch they rebelled against…
Eminently worth reading in full: “Trump’s War on History,” from @dfriedman.bsky.social and @noturtlesoup17.bsky.social in @motherjones.com.
* George Orwell, 1984
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As we face the past, we might send heliocentric birthday greetings to Galileo Galilei, the physicist, philosopher, and pioneering astronomer; he was born on this date in 1564. Galileo (whom, readers will recall, had his share of trouble with authorities displeased with his challenge to Aristotelean cosmology), died insisting “still, it [the Earth] moves.”
Draft of Galileo’s letter to Leonardo Donato, Doge of Venice, in which he first recorded the movement of the moons of Jupiter– an observation that upset the notion that all celestial bodies must revolve around the Earth. (source)
“The story of the events and the people who, over centuries, came together to bring us in from the cold and to wrap us in a warm blanket of technology is a matter of vital importance, since more and more of that technology infiltrates every aspect of our lives”*…
From Étienne Fortier-Dubois, the Historical Tech Tree, “a timeline to visualize the full history of all major technologies (or 1,780 of them, at least), from 3.3 million years ago to today. More importantly, it also contains more than 2,000 connections between them: prerequisites, improvements, inspirations: anything that allows you to understand how one thing led to another”…
The historical tech tree is a project by Étienne Fortier-Dubois to visualize the entire history of technologies, inventions, and (some) discoveries, from prehistory to today. Unlike other visualizations of the sort, the tree emphasizes the connections between technologies: prerequisites, improvements, inspirations, and so on.
These connections allow viewers to understand how technologies came about, at least to some degree, thus revealing the entire history in more detail than a simple timeline, and with more breadth than most historical narratives. The goal is not to predict future technology, except in the weak sense that knowing history can help form a better model of the world. Rather, the point of the tree is to create an easy way to explore the history of technology, discover unexpected patterns and connections, and generally make the complexity of modern tech feel less daunting….
How one thing led to another: “Historical Tech Tree.”
See also: “Introducing the Historical Tech Tree.”
* “The story of the events and the people who, over centuries, came together to bring us in from the cold and to wrap us in a warm blanket of technology is a matter of vital importance, since more and more of that technology infiltrates every aspect of our lives. It’s become a life-support system without which we can’t survive. And yet, how much of it do we understand?”- James Burke, in the first episode of Connections.
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As we ponder progress, we might recall that it was on this date in 1633, following an Inquisition, that the Holy Office in Rome forced Galileo Galilei to recant his view that the Sun, not the Earth, is the center of the Universe in the form in which he presented it. Gaileo had used a telescope (1603 on the Timeline) to reach his (correct) conclusion.
He refused to recant, and put under house arrest, where he effectively remained for the rest of his life. He dedicated his time in restriction to one of his finest works, Two New Sciences, in which he summarised work he had done some forty years earlier, on the two sciences now called kinematics and strength of materials, and published in Holland to avoid the censor. As a result of this work– highly praised by Albert Einstein– Galileo is often called the “father of modern physics.”
“There is only one world, the natural world, exhibiting patterns we call the ‘laws of nature’”*…
The quote above (in full, below) is the reigning substantive understanding of scientific naturalism that is commonplace today. Indeed, the modern era is often seen as the triumph of science over supernaturalism. But, as Peter Harrison explains, what really happened is far more interesting…
By any measure, the scientific revolution of the 17th century was a significant milestone in the emergence of our modern secular age. This remarkable historical moment is often understood as science finally liberating itself from the strictures of medieval religion, striking out on a new path that eschewed theological explanations and focused its attentions solely on a disenchanted, natural world. But this version of events is, at best, half true.
Medieval science, broadly speaking, had followed Aristotle in seeking explanations in terms of the inherent causal properties of natural things. God was certainly involved, at least to the extent that he had originally invested things with their natural properties and was said to ‘concur’ with their usual operations. Yet the natural world had its own agency. Beginning in the 17th century, the French philosopher and scientist René Descartes and his fellow intellectual revolutionaries dispensed with the idea of internal powers and virtues. They divested natural objects of inherent causal powers and attributed all motion and change in the universe directly to natural laws.
But, for all their transformative influence, key agents in the scientific revolution such as Descartes, Johannes Kepler, Robert Boyle and Isaac Newton are not our modern and secular forebears. They did not share our contemporary understandings of the natural or our idea of ‘laws of nature’ that we imagine underpins that naturalism…
[Harrison traces the history of the often contentious, but ultimately momentous rise of naturalism, then considers the historical acounts of that ascension– and what they gloss over or miss altogether. He then turns to whay that matters…]
… the contrived histories of naturalism that purport to show its victory over supernaturalism were fabricated in the 19th century and are simply not consistent with the historical evidence. They are also tainted by a cultural condescension that, in the past at least, descended into outright racism. Few, if any, would today endorse the chauvinism that attends these older, triumphalist accounts of the history of naturalism. Yet, it is worth reflecting upon the extent to which elements of cultural condescension necessarily colour scholarly endeavours that are premised on the imagined ‘neutral’ grounds of naturalism. Careful consideration of the contingent historical circumstances that gave rise to present analytic categories that enjoy significant standing and authority would suggest that there is nothing especially neutral or objective about them. Any clear-eyed crosscultural comparison – one that refrains from assessing worldviews in terms of how they measure up to the standard of the modern West – will reinforce this. We might go so far as to adopt a form of ‘reverse anthropology’, where we think how our own conceptions of the world might look if we adopted the frameworks of others. This might entail dispensing with the idea of the supernatural, and attempting to think outside the box of our recently inherited natural/supernatural distinction.
History [that is, the “actual” history that Harrison recounts] suggests that our regnant modern naturalism is deeply indebted to monotheism, and that its adherents may need to abandon the comforting idea that their naturalistic commitments are licensed by the success of science. As for the idea of the supernatural, ironically this turns out to be far more important for the identity of those who wish to deny its reality than it had ever been for traditional religious believers…
Fascinating and provocative: “The birth of naturalism,” from @uqpharri in @aeonmag.
* “There is only one world, the natural world, exhibiting patterns we call the ‘laws of nature’, and which is discoverable by the methods of science and empirical investigation. There is no separate realm of the supernatural, spiritual, or divine; nor is there any cosmic teleology or transcendent purpose inherent in the nature of the universe or in human life.” – Sean Carroll, The Big Picture
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As we rethink reality, we might recall that it was on this date in 1588 that Tycho Brahe first outlined his “Tychonic system” concept of the structure of the solar system. The Tychonic system was a hybrid, sharing both the basic idea of the geocentric system of Ptolemy, and the heliocentric idea of Nicholas Copernicus. Published in his De mundi aethorei recentioribus phaenomenis, Tycho’s proposal, retaining Aristotelian physics, kept the the Sun and Moon revolving about Earth in the center of the universe and, at a great distance, the shell of the fixed stars was centered on the Earth. But like Copernicus, he agreed that Mercury, Venus, Mars, Jupiter, and Saturn revolved about the Sun. Thus he could explain the motions of the heavens without “crystal spheres” carrying the planets through complex Ptolemaic epicycles.
On this same date, in 1633, Galileo Galilei arrived in Rome to face trial before the Inquisition. His crime was professing the belief that the earth revolves around the sun– based on observations that he’d made further to Copernicus and Tycho.
“Zero is powerful because it is infinity’s twin. They are equal and opposite, yin and yang.”*…
… and like infinity, zero can be a cognitive challenge. Yasemin Saplakoglu explains…
Around 2,500 years ago, Babylonian traders in Mesopotamia impressed two slanted wedges into clay tablets. The shapes represented a placeholder digit, squeezed between others, to distinguish numbers such as 50, 505 and 5,005. An elementary version of the concept of zero was born.
Hundreds of years later, in seventh-century India, zero took on a new identity. No longer a placeholder, the digit acquired a value and found its place on the number line, before 1. Its invention went on to spark historic advances in science and technology. From zero sprang the laws of the universe, number theory and modern mathematics.
“Zero is, by many mathematicians, definitely considered one of the greatest — or maybe the greatest — achievement of mankind,” said the neuroscientist Andreas Nieder, who studies animal and human intelligence at the University of Tübingen in Germany. “It took an eternity until mathematicians finally invented zero as a number.”
Perhaps that’s no surprise given that the concept can be difficult for the brain to grasp. It takes children longer to understand and use zero than other numbers, and it takes adults longer to read it than other small numbers. That’s because to understand zero, our mind must create something out of nothing. It must recognize absence as a mathematical object.
“It’s like an extra level of abstraction away from the world around you,” said Benjy Barnett, who is completing graduate work on consciousness at University College London. Nonzero numbers map onto countable objects in the environment: three chairs, each with four legs, at one table. With zero, he said, “we have to go one step further and say, ‘OK, there wasn’t anything there. Therefore, there must be zero of them.’”
In recent years, research started to uncover how the human brain represents numbers, but no one examined how it handles zero. Now two independent studies, led by Nieder and Barnett, respectively, have shown that the brain codes for zero much as it does for other numbers, on a mental number line. But, one of the studies found, zero also holds a special status in the brain…
Read on to find out the ways in which new studies are uncovering how the mind creates something out of nothing: “How the Human Brain Contends With the Strangeness of Zero,” from @QuantaMagazine.
Pair with Percival Everett’s provocative (and gloriously entertaining) Dr. No.
* Charles Seife, Zero: The Biography of a Dangerous Idea
Scheduling note: your correspondent is sailing again into uncommonly busy waters. So, with apologies for the hiatus, (R)D will resume on Friday the 25th…
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As we noodle on noodling on nothing, we might send carefully-calculated birthday greetings to Erasmus Reinhold; he was born on this date in 1511. A professor of Higher Mathematics (at the University of Wittenberg, where he was ultimately Rector), Reinhold worked at a time when “mathematics” included applied mathematics, especially astronomy– to which he made many contributions and of which he was considered the most influential pedagogue of his generation.
Reinhold’s Prutenicae Tabulae (1551, 1562, 1571, and 1585) or Prussian Tables were astronomical tables that helped to disseminate calculation methods of Copernicus throughout the Empire. That said, Reinhold (like other astronomers before Kepler and Galileo) translated Copernicus’ mathematical methods back into a geocentric system, rejecting heliocentric cosmology on physical and theological grounds. Both Reinhold’s Prutenic Tables and Copernicus’ studies were the foundation for the Calendar Reform by Pope Gregory XIII in 1582… and both made copious use of zeros.
“The structure of the universe- I mean, of the heavens and the earth and the whole world- was arranged by one harmony through the blending of the most opposite principles”*…
… And as we undertake to understand that structure, we use the lens– the mental models and language– that we have. The redoubtable Anthony Grafton considers and early 16th century attempt: Heinrich Cornelius Agrippa‘s De Occulta Philosophia libri III, Agrippa’s encyclopedic study of magic that was, at the same time, an attempt to describe the structure of the universe, sketching a path that leads both upward and downward: up toward complete knowledge of God, and down into every order of being on earth…
Heinrich Cornelius Agrippa’s manual of learned magic, De occulta philosophia (1533), explicated the ways in which magicians understood and manipulated the cosmos more systematically than any of his predecessors. It was here that he mapped the entire network of forces that passed from angels and demons, stars and planets, downward into the world of matter. Agrippa laid his work out in three books, on the elementary, astrological, and celestial worlds. But he saw all of them as connected, weaving complex spider webs of influence that passed from high to low and low to high. With the zeal and learning of an encyclopedist imagined by Borges, Agrippa catalogued the parts of the soul and body, animals, minerals, and plants that came under the influence of any given planet or daemon. He then offered his readers a plethora of ways for averting evil influences and enhancing good ones. Some of these were originally simple remedies, many of them passed down from Roman times in the great encyclopedic work of Pliny the Younger and less respectable sources, and lacked any deep connection to learned magic.
[Grafton describes the many dimensions of Agrippa’s compilation of the then-current state of magic…]
But few of the dozens of manuscript compilations that transmitted magic through the Middle Ages reflected any effort to impose a system on the whole range of magical practices, as Agrippa’s book did. He made clear that each of the separate arts of magic, from the simplest form of herbal remedy to the highest forms of communication with angels, fitted into a single, lucid structure with three levels: the elementary or terrestrial realm, ruled by medicine and natural magic; the celestial realm, ruled by astrology; and the intellectual realm, ruled by angelic magic. Long tendrils of celestial and magical influence stitched these disparate realms into something like a single great being…
Agrippa offered, in other words, both a grand, schematic plan of the cosmos, rather like that of the London Underground, which laid out its structure as a whole, and a clutch of minutely detailed local Ordinance Survey maps, which made it possible to navigate through any specific part of the cosmos. Readers rapidly saw what Agrippa had to offer. The owner of a copy of On Occult Philosophy, now in Munich, made clear in his only annotation that he appreciated Agrippa’s systematic presentation of a universe in which physical forms revealed the natures of beings and their relations to one another: “Physiognomy, metoposcopy [the interpretation of faces], and chiromancy, and the arts of divination from the appearance and gestures of the human body work through signs.” Agrippa’s book not only became the manual of magical practice, but it also made the formal claim that magic was a kind of philosophy in its own right…
A 16th century attempt to understand the structure of the universe: “Marked by Stars- Agrippa’s Occult Philosophy,” from @scaliger in @PublicDomainRev.
* Aristotle
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As we take in the totality, we might send more modern birthday greetings to a rough contemporary of Agrippa’s, Evangelista Torricelli; he was born on this date in 1608. Even as Agrippa was trying to understand the world via magic, Torricelli, a student of Galileo, was using observation and reason to fuel the same quest. A physicist and mathematician, he is best known for his invention of the barometer, but is also known for his advances in optics, his work on the method of indivisibles, and “Torricelli’s Trumpet.” The torr, a unit of pressure, is named after him.
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