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Posts Tagged ‘Galileo

“We forced our opponents to change their minds”*…

 

Change

 

There are those who say this pandemic shouldn’t be politicised. That doing so is tantamount to basking in self-righteousness. Like the religious hardliner shouting it’s the wrath of God, or the populist scaremongering about the “Chinese virus”, or the trend-watcher predicting we’re finally entering a new era of love, mindfulness, and free money for all.

There are also those who say now is precisely the time to speak out. That the decisions being made at this moment will have ramifications far into the future. Or, as Obama’s chief of staff put it after Lehman Brothers fell in 2008: “You never want a serious crisis to go to waste.”

In the first few weeks, I tended to side with the naysayers. I’ve written before about the opportunities crises present, but now it seemed tactless, even offensive. Then more days passed. Little by little, it started to dawn that this crisis might last months, a year, even longer. And that anti-crisis measures imposed temporarily one day could well become permanent the next.

No one knows what awaits us this time. But it’s precisely because we don’t know because the future is so uncertain, that we need to talk about it…

In a crisis, what was once unthinkable can suddenly become inevitable. We’re in the middle of the biggest societal shakeup since the second world war…

In a fundamentally optimistic essay, historian Rutger Bregman peers through the Overton Window to explain the seemingly-sudden ripening of ideas that seemed impossible just months ago: “The neoliberal era is ending. What comes next?

See also: “Bruno Latour: ‘This is a global catastrophe that has come from within’.”

And for some (more) historical context, in the form of a scientist’s computer model that tracks “cycles” he has detected in the U.S. since 1780– culminating (so far) in his prediction in Nature in 2010 that 2020 would see huge unrest– see “This Researcher Predicted 2020 Would Be Mayhem. Here’s What He Says May Come Next.”

* Margaret Thatcher in 2002, alluding to Tony Blair and New Labour when asked what she saw as her great achievement.  (N.B., as the piece excerpted above explains, in 2020, Bernie Sanders’s “moderate” rival Joe Biden is proposing tax increases

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As we buckle up, we might recall that it was on this date in 1633 that Galileo delivered his Fourth (and final) Deposition to the court of the Inquisition, which had raised theological objections to his heliocentric view of the solar system (for the second time, he had been tried in 1616 for the same offense, and both censured and censored– his books were banned).  This second trial, occasioned by his publication of Dialogue Concerning the Two Chief World Systems, which resurfaced his heliocentric view, ended the following day, when the Inquisitor issued these rulings:

 

  • Galileo was found “vehemently suspect of heresy”, namely of having held the opinions that the Sun lies motionless at the center of the universe, that the Earth is not at its center and moves, and that one may hold and defend an opinion as probable after it has been declared contrary to Holy Scripture.  He was required to “abjure, curse, and detest” those opinions.
  • He was sentenced to formal imprisonment at the pleasure of the Inquisition.  (On the following day this was commuted to house arrest, under which he remained for the rest of his life.)
  • His offending Dialogue was banned; and in an action not announced at the trial, publication of any of his works was forbidden, including any he might write in the future
300px-Galileo_before_the_Holy_Office

Galileo before the Holy Office, a 19th-century painting by Joseph-Nicolas Robert-Fleury

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Written by LW

June 18, 2020 at 1:01 am

“Memories, you’re talking about memories”*…

 

blade-runner-still-1-

It’s natural, here at the lip of a new year, to wonder what 2019 might hold.  And it’s bracing to note that Blade Runner (released in 1982) is one of 14 films set in a future that is this, the year on which we’re embarking.

But lest we dwell on the dark prognostication they tend to portray, we might take heart from Jill Lepore’s wonderfully-entertaining review of predictions: “What 2018 looked like fifty years ago” and recent honoree Isaac Asimov’s 1983 response to the Toronto Star‘s request for a look at the world of 2019.

Niels Bohr was surely right when he observed that “prediction is difficult, especially about the future.”

* Rick Deckard (Harrison Ford), Blade Runner

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As we contend with the contemporary, we might spend a memorial moment honoring two extraordinary explorers who died on this date.  Marco Polo, whose coda to his remarkable travelogue was “I did not tell half of what I saw,” passed away on this date in 1324.

A page from “Il Milione” (aka” Le Livre des Merveilles” (“The Book of Wonders”)… and in English, “The Travels of Marco Polo”

And Galileo Galilei, the Italian physicist, philosopher, and pioneering astronomer, rose to his beloved heavens on this date in 1642.  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.

Written by LW

January 8, 2019 at 1:01 am

“Equipped with his five senses, man explores the universe around him and calls the adventure Science”*…

 

Caleb Scharf wants to take you on an epic tour. His latest book, The Zoomable Universe, starts from the ends of the observable universe, exploring its biggest structures, like groups of galaxies, and goes all the way down to the Planck length—less than a billionth of a billionth of a billionth of a meter. It is a breathtaking synthesis of the large and small. Readers journeying through the book are treated to pictures, diagrams, and illustrations all accompanied by Scharf’s lucid, conversational prose. These visual aids give vital depth and perspective to the phenomena that he points out like a cosmic safari guide. Did you know, he offers, that all the Milky Way’s stars can fit inside the volume of our solar system?

Scharf, the director of Columbia University’s Astrobiology Center, is a suitably engaging guide. He’s the author of the 2012 book Gravity’s Engines: How Bubble-Blowing Black Holes Rule Galaxies, Stars, and Life in the Universe, and last year he speculated in Nautilus about whether alien life could be so advanced as to be indistinguishable from physics.

In The Zoomable Universe, Scharf puts the notion of scale—in biology and physics—center-stage. “The start of your journey through this book and through all known scales of reality is at that edge between known and unknown,” he writes…

Another entry in a collection that long-time readers know your correspondent cultivates, visualizations of relative scale (inspired by Charles and Ray Eames’ Powers of Ten—see, e.g., here, here, here, and here): “This Will Help You Grasp the Sizes of Things in the Universe.”

* Edwin Powell Hubble

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As we keep things in perspective, we might spare a thought for Paolo Frisi; he died on this date in 1784.  A mathematician, astronomer, and physicist who worked in hydraulics (he designed a canal between Milan and Pavia) and introduced the lightning conductor into Italy, he is probably best remembered for his compilation, interpretation, and dissemination of the work of other scientists, especially Galileo Galilei and Sir Isaac Newton.

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Your correspondent is headed into the Thanksgiving Holiday– and so into a brief hiatus in posting.  Regular service will resume on Sunday the 26th… or when the tryptophan haze clears, whichever comes first.

Written by LW

November 22, 2017 at 1:01 am

“Religion is like a pair of shoes… Find one that fits for you, but don’t make me wear your shoes”*…

 

Procession of the Catholic Holy League on the Place de Grève, Paris, 1590-3 (oil on canvas). Such displays of intolerance became increasingly rare with the advent of the modern European state. [source]

Religious freedom has become an emblematic value in the West. Embedded in constitutions and championed by politicians and thinkers across the political spectrum, it is to many an absolute value, something beyond question. Yet how it emerged, and why, remains widely misunderstood.

According to the conventional narrative, freedom of religion arose in the West in the wake of devastating wars fought over religion. It was catalysed by powerful arguments from thinkers such as John Locke, Baruch Spinoza, Pierre Bayle and Voltaire. These philosophers and political theorists responded to the brutality of the religious wars with support for radical notions of toleration and religious freedom. Their liberal ideals then became embedded in the political institutions of the West, following the American and French Revolutions.

In broad outline, such is the account accepted by most political philosophers and social scientists. But the evidence does not support this emphasis on the power of ideas in shaping the rise of religious freedom, and underestimates the decisive role played by institutions…

Ideas were not enough to realise religious freedom. Crucially, it took political and institutional changes – specifically, the growth and strengthening of the ability of states to create and enforce rules – to make religious freedom in the West possible and appealing. It wasn’t the ideas of Bayle or Spinoza or Locke driving the rise of state power, it was the need to raise resources for governing and war. For the rising fiscal-military state, religious uniformity and persecution simply became too expensive and inefficient…

The first change was the transformation in the scale of European states. In the late Middle Ages, medieval rulers began to invest in building administrative capacity and to raise taxes more regularly. The most dramatic developments, however, occurred after 1500, as a result of developments in military technology that historians label the Military Revolution. This continent-wide arms race, brought on by the development of gunpowder, forced rulers to invest in greater fiscal and administrative capacity.

To pay for larger armies, new taxes had to be raised and a permanent system of government borrowing established. Moreover, there was a shift away from ad hoc, feudal and decentralised tax systems, and a move towards standardisation and centralisation. Rather than relying upon tax farmers, the church or merchant companies to raise taxes on their behalf, rulers invested in vast bureaucracies to do it directly. It was the only way they could pay for their ever-growing armies…

Economic changes complemented the rise of religious freedom, most notably the onset of modern economic growth. As in the Jewish example, greater freedom allowed religious minorities to flourish. French Protestants expelled by Louis XIV brought with them advanced skills and industrial expertise to England, the Netherlands and Prussia. In Industrial Revolution Britain, Quakers and other religious dissenters were overrepresented among businessmen, entrepreneurs and innovators.

The indirect consequences of moving from identity rules to general rules were even more important. Identity rules had limited the scope of trade and the division of labour. As these identity rules were removed – as guilds lost authority, and cities and lords lost their ability to charge internal tariffs – trade and commerce expanded.

The growth of trade, in turn, reinforced the trend towards liberalism. Trade, as Enlightenment thinkers such as Montesquieu argued, encouraged individuals to see the world through the positive-sum lens of mutual beneficial interaction rather than through the zero-sum lens of conflict. Religious freedom began to seem less like a recipe for social disorder and civil war, and more like a win-win proposition…

The history of how religious freedom came to be is a reminder that commitment to liberal values alone is not enough for liberalism to flourish. It requires a suitable political and economic foundation. As the experience of 1930s Germany suggests, religious persecution can quickly re-emerge. We cannot rely on liberal ideas alone to be effective. If we value religious freedom, and other achievements of liberalism, we must look to the vitality of their institutional foundations.

This fascinating essay in its entirety at: “Ideas were not enough.” (Note earlier examples of of religious freedom as both a tool and a result of statecraft, e.g., Genghis Khan’s building of the Mongol Empire.)

* George Carlin

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As we celebrate tolerance, we might send free-thinking birthday greetings to Tommaso Campanella; he was born on this date in 1568.  A Dominican friar, philosopher, theologian, astrologer, and poet, he was an early empiricist and a vocal critic of the Aristotelian orthodoxy (indeed, he wrote and published a defense of Galileo during the great astronomer’s ecclesiastical trial).  For his heterodoxy, he was denounced to the Inquisition and imprisoned.

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Written by LW

September 5, 2017 at 1:01 am

“If I have seen further than others, it is by standing upon the shoulders of giants”*…

 

Newton’s reflecting telescope of 1671

On 11 January 1672, the Fellows of the British Royal Society were treated to a demonstration of Isaac Newton’s reflecting telescope, which formed images with mirrors rather than with the lenses that had been used since the time of Galileo. Afterward, the fellows hailed Newton as the inventor of this marvellous new instrument, an attribution that sticks to the present. However, this linear historical account obscures a far more interesting, convoluted story. Newton’s claim was immediately challenged on behalf of two other contenders, James Gregory and Laurent Cassegrain. More confounding, the earliest known concept of using a curved mirror to focus light predated Newton by more than 1,500 years; the final realisation of a practical reflecting telescope post-dated him by more than a half century…

For almost any device, claiming one individual as the inventor is problematic to say the least. Conception, demonstration and implementation can be very different things, and the path connecting them is typically not a line but a long, challenging and tortuous route…

A cautionary tale illustrating the danger of crediting technologies to single inventors: “How many great minds does it take to invent a telescope?

Pair with this explanation of why men so often get credit for women’s inventions– a phenomenon so common that it has a name, “the Matilda effect.”

* Issac Newton

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As we share the credit, we might send scientific birthday greetings to Vincenzo Viviani; he was born on this date in 1622.  A mathematician and engineer, Viviani is probably best remembered as a discipline of Galileo: he served as the (then-blind) scientist’s secretary until Galileo’s death; he edited the first edition of Galileo’s collected works; and he worked tirelessly to have his master’s memory rehabilitated.  But Viviani was an accomplished scientist in his own right: he published a number of books on mathematical and scientific subjects, and was a founding member of the Accademia del Cimento, one of the first important scientific societies, predating England’s Royal Society.

 source

Written by LW

April 5, 2017 at 1:01 am

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