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Posts Tagged ‘Martin Rees

“Our remedies oft in ourselves do lie”*…

Charles F. Kennel and Martin Rees argue that the Anthropocene demands a massive realignment of priorities…

Our Earth has existed for 45 million centuries; and humans for a few thousand. But this century is the first when our species is so numerous—and so demanding of energy and natural resources—that we risk collectively despoiling our planet. It’s surely an ethical imperative that we should not deny future generations the wonders and beauty of the natural world. Policy must, in the words of the Brundtland Commission, “meet the needs of the present—especially the world’s poor—without compromising the ability of future generations to meet their own needs.” This requires a massive transformation in our lives—how we derive our energy, and how we feed ourselves. It’s an inspiring challenge for the younger generation, and an investment crucial for the future of humanity—and indeed all life on Earth. But it requires a massive realignment of priorities in all nations—a change in individual attitudes, as well as in public policy.

Planet Earth is on a perilous course. Society’s delayed adjustment to Anthropocene dynamics has amplified risks to global, regional, and local human security and threatens a comprehensive crisis, especially if risks materialize in reinforcing ways. This, the Crisis of the Anthropocene, is likely to be most acute when world population peaks—according to U.N. demographers this should happen before the end of the century. The number of humans at risk will therefore be largest when resource consumption and stress on eco-environmental systems are maximal and extreme climatic events disrupt ecologies at their most vulnerable. Since threats we presently think distinct are the most likely to interact and cascade then, we will not have the luxury of dealing with them one at a time, as we are trying to do today.

The nations of Earth need to transform their economies in little more than one human generation to meet the challenges posed by Anthropocene dynamics…

Read on for their prescription: “Two Distinguished Scientists on How to Rescue Humanity,” from @kennel_charles and @LordMartinRees in @NautilusMag.

* Shakespeare, All’s Well That Ends Well

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As we face the future, we might send precipitant birthday greetings to atmospheric scientist Bernard Vonnegut; he was born on this date in 1917. While he was not as well-known as his novelist brother Kurt (nor in some circles, as his architect father Kurt Sr.), he is nonetheless widely remembered for his discovery that that silver iodide could be used effectively in cloud seeding to produce snow and rain.

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Written by (Roughly) Daily

August 29, 2022 at 1:00 am

“The Universe is not only queerer than we suppose, but queerer than we can suppose”*…

 

Complex nature

Albert Einstein said that the “most incomprehensible thing about the Universe is that it is comprehensible.” He was right to be astonished. Human brains evolved to be adaptable, but our underlying neural architecture has barely changed since our ancestors roamed the savannah and coped with the challenges that life on it presented. It’s surely remarkable that these brains have allowed us to make sense of the quantum and the cosmos, notions far removed from the ‘commonsense’, everyday world in which we evolved.

But I think science will hit the buffers at some point. There are two reasons why this might happen. The optimistic one is that we clean up and codify certain areas (such as atomic physics) to the point that there’s no more to say. A second, more worrying possibility is that we’ll reach the limits of what our brains can grasp. There might be concepts, crucial to a full understanding of physical reality, that we aren’t aware of, any more than a monkey comprehends Darwinism or meteorology. Some insights might have to await a post-human intelligence…

Abstract thinking by biological brains has underpinned the emergence of all culture and science. But this activity, spanning tens of millennia at most, will probably be a brief precursor to the more powerful intellects of the post-human era – evolved not by Darwinian selection but via ‘intelligent design’. Whether the long-range future lies with organic post-humans or with electronic super-intelligent machines is a matter for debate. But we would be unduly anthropocentric to believe that a full understanding of physical reality is within humanity’s grasp, and that no enigmas will remain to challenge our remote descendants…

Martin Rees (Lord Rees of Ludlow), cosmologist and astrophysicist, Astronomer Royal since 1995, past Master of Trinity College, Cambridge, and former President of the Royal Society, on the limits of human understanding (and how we might transcend them): “Black holes are simpler than forests and science has its limits.”

For a “companionable” take on the character of the knowledge that we do (seem to) have, see “Is Quantum Theory About Reality or What We Know?“; and for an argument that we should stop worrying about the limits of human knowledge, and start worrying about wasting the knowledge we already have, see here.

* J. B. S. Haldane, Possible Worlds and Other Papers (1927)

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As we prepare to call (an artificially-intelligent) friend, we might send acutely observant birthday greetings to an astute student of the human animal, anthropologist Margaret Mead; she was born on this date in 1901.  Best-known for her studies of the nonliterate peoples of Oceania, she was 23 when she first traveled to the South Pacific, to conduct research for her doctoral dissertation. The book that resulted, Coming of Age in Samoa, was– and remains– a best-seller.

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Written by (Roughly) Daily

December 16, 2017 at 1:01 am

All Reith Now!…

Bertrand Russell delivering the first Reith Lecture

The Reith Lectures were inaugurated by the BBC in 1948 to honor the contributions of its first Director General, John Reith (more formally known by the end of his career as “John Charles Walsham Reith, 1st Baron Reith”).

Lord Reith had operated on the principle that broadcasting should be a public service that enriches the intellectual and cultural life of the nation. In that spirit the BBC invites a leading figure to deliver a series of radio lectures each year– the aim being “to advance public understanding and debate about significant issues of contemporary interest.”

And so, over the last 63 years, British listeners have been treated to Arnold Toynbee on “The World and the West,” Robert Oppenheimer on “Science and Common Understanding,” John Searle on “Minds, Brains, and Science,” John Keegan on “War in Our World,” Marina Warner on “Managing Monsters”… and dozens more extraordinary minds explaining and provoking.

As of a few weeks ago the BBC has made the entire audio library of Reith Lectures available online, from Bertrand Russell’s kick-off through 2010’s Martin Rees on “Scientific Horizons.”

Hallelujah!

[TotH to @brainpicker for the link]

As we listen and learn, we might recall that it was on this date in 1908 that “SOS” (. . . _ _ _ . . .) became the global standard radio distress signal.  While it was officially replaced in 1999 by the Global Maritime Distress Safety System, SOS is still recognized as a visual distress signal.

SOS has traditionally be “translated” (expanded) to mean “save our ship,” “save our souls,” “send out succor,” or other such pleas.  But while these may be helpful mnemonics, SOS is not an abbreviation or acronym.  Rather, according to the Oxford English Dictionary, the letters were chosen simply because they are easily transmitted in Morse code.

click image above, or here

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