Author Archives: Attention to the Unseen

Has the quantum era has begun?

IDG News Service reports: Quantum computing’s full potential may still be years away, but there are plenty of benefits to be realized right now.

So argues Vern Brownell, president and CEO of D-Wave Systems, whose namesake quantum system is already in its second generation.

Launched 17 years ago by a team with roots at Canada’s University of British Columbia, D-Wave introduced what it called “the world’s first commercially available quantum computer” back in 2010. Since then the company has doubled the number of qubits, or quantum bits, in its machines roughly every year. Today, its D-Wave 2X system boasts more than 1,000.

The company doesn’t disclose its full customer list, but Google, NASA and Lockheed-Martin are all on it, D-Wave says. In a recent experiment, Google reported that D-Wave’s technology outperformed a conventional machine by 100 million times. [Continue reading…]

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Universe is expanding up to 9% faster than we thought, say scientists

galaxies

The Guardian reports: The universe is expanding faster than anyone had previously measured or calculated from theory. This is a discovery that could test part of Albert Einstein’s theory of relativity, a pillar of cosmology that has withstood challenges for a century.

Nasa and the European Space Agency jointly announced the universe is expanding 5% to 9% faster than predicted, a finding they reached after using the Hubble space telescope to measure the distance to stars in 19 galaxies beyond theMilky Way.

The rate of expansion did not match predictions based on measurements of radiation left over from the Big Bang that gave rise to the known universe 13.8bn years ago.

Physicist and lead author Adam Riess said: “You start at two ends, and you expect to meet in the middle if all of your drawings are right and your measurements are right.

“But now the ends are not quite meeting in the middle and we want to know why.” [Continue reading…]

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How the event that killed off the dinosaurs wiped out life in Antarctica

By James Witts, University of Leeds

The Cretaceous–Paleogene mass extinction 66m years ago was the most recent of five similar crises to have devastated life on Earth over the last 540m years. It rapidly killed off an estimated 76% of species around the globe, including, most famously, the dinosaurs.

But exactly how this event affected different areas of the globe has not been entirely understood. Some scientists have suggested that creatures living at high latitudes could have been sheltered from the worst effects of the mass extinction. Now our new research, published in the journal Nature Communications, reveals that this wasn’t the case – even marine molluscs in Antarctica were affected.

Scientists are still debating what caused the extinction. Many researchers believe it was a sudden crisis, triggered by a catastrophic asteroid impact. This formed the 200km Chicxulub crater, today buried off Mexico’s Yucatan Peninsula. It also produced a thin layer of rock found all over the world known as the “K–Pg boundary”. This “fallout” layer is rich in debris from the asteroid impact and an element called Iridium, rare on Earth but common in space rocks. It coincides with many of the extinctions in the fossil record to within 32,000 years – a geological blink of an eye.

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Teaching ‘grit’ is bad for children, and bad for democracy

Nicholas Tampio writes: According to the grit narrative, children in the United States are lazy, entitled and unprepared to compete in the global economy. Schools have contributed to the problem by neglecting socio-emotional skills. The solution, then, is for schools to impart the dispositions that enable American children to succeed in college and careers. According to this story, politicians, policymakers, corporate executives and parents agree that kids need more grit.

The person who has arguably done more than anyone else to elevate the concept of grit in academic and popular conversations is Angela Duckworth, professor at the Positive Psychology Center at the University of Pennsylvania. In her new book, Grit: The Power of Passion and Perseverance, she explains the concept of grit and how people can cultivate it in themselves and others.

According to Duckworth, grit is the ability to overcome any obstacle in pursuit of a long-term project: ‘To be gritty is to hold fast to an interesting and purposeful goal. To be gritty is to invest, day after week after year, in challenging practice. To be gritty is to fall down seven times and rise eight.’ Duckworth names musicians, athletes, coaches, academics and business people who succeed because of grit. Her book will be a boon for policymakers who want schools to inculcate and measure grit.

There is a time and place for grit. However, praising grit as such makes no sense because it can often lead to stupid or mean behaviour. Duckworth’s book is filled with gritty people doing things that they, perhaps, shouldn’t. [Continue reading…]

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How Neanderthal DNA helps humanity

Emily Singer writes: Early human history was a promiscuous affair. As modern humans began to spread out of Africa roughly 50,000 years ago, they encountered other species that looked remarkably like them — the Neanderthals and Denisovans, two groups of archaic humans that shared an ancestor with us roughly 600,000 years earlier. This motley mix of humans coexisted in Europe for at least 2,500 years, and we now know that they interbred, leaving a lasting legacy in our DNA. The DNA of non-Africans is made up of roughly 1 to 2 percent Neanderthal DNA, and some Asian and Oceanic island populations have as much as 6 percent Denisovan DNA.

Over the last few years, scientists have dug deeper into the Neanderthal and Denisovan sections of our genomes and come to a surprising conclusion. Certain Neanderthal and Denisovan genes seem to have swept through the modern human population — one variant, for example, is present in 70 percent of Europeans — suggesting that these genes brought great advantage to their bearers and spread rapidly.

“In some spots of our genome, we are more Neanderthal than human,” said Joshua Akey, a geneticist at the University of Washington. “It seems pretty clear that at least some of the sequences we inherited from archaic hominins were adaptive, that they helped us survive and reproduce.”

But what, exactly, do these fragments of Neanderthal and Denisovan DNA do? What survival advantage did they confer on our ancestors? Scientists are starting to pick up hints. Some of these genes are tied to our immune system, to our skin and hair, and perhaps to our metabolism and tolerance for cold weather, all of which might have helped emigrating humans survive in new lands.

“What allowed us to survive came from other species,” said Rasmus Nielsen, an evolutionary biologist at the University of California, Berkeley. “It’s not just noise, it’s a very important substantial part of who we are.” [Continue reading…]

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How philosophy came to disdain the wisdom of oral cultures

Justin E H Smith writes: A poet, somewhere in Siberia, or the Balkans, or West Africa, some time in the past 60,000 years, recites thousands of memorised lines in the course of an evening. The lines are packed with fixed epithets and clichés. The bard is not concerned with originality, but with intonation and delivery: he or she is perfectly attuned to the circumstances of the day, and to the mood and expectations of his or her listeners.

If this were happening 6,000-plus years ago, the poet’s words would in no way have been anchored in visible signs, in text. For the vast majority of the time that human beings have been on Earth, words have had no worldly reality other than the sound made when they are spoken.

As the theorist Walter J Ong pointed out in Orality and Literacy: Technologizing the Word (1982), it is difficult, perhaps even impossible, now to imagine how differently language would have been experienced in a culture of ‘primary orality’. There would be nowhere to ‘look up a word’, no authoritative source telling us the shape the word ‘actually’ takes. There would be no way to affirm the word’s existence at all except by speaking it – and this necessary condition of survival is important for understanding the relatively repetitive nature of epic poetry. Say it over and over again, or it will slip away. In the absence of fixed, textual anchors for words, there would be a sharp sense that language is charged with power, almost magic: the idea that words, when spoken, can bring about new states of affairs in the world. They do not so much describe, as invoke.

As a consequence of the development of writing, first in the ancient Near East and soon after in Greece, old habits of thought began to die out, and certain other, previously latent, mental faculties began to express themselves. Words were now anchored and, though spellings could change from one generation to another, or one region to another, there were now physical traces that endured, which could be transmitted, consulted and pointed to in settling questions about the use or authority of spoken language.

Writing rapidly turned customs into laws, agreements into contracts, genealogical lore into history. In each case, what had once been fundamentally temporal and singular was transformed into something eternal (as in, ‘outside of time’) and general. Even the simple act of making everyday lists of common objects – an act impossible in a primary oral culture – was already a triumph of abstraction and systematisation. From here it was just one small step to what we now call ‘philosophy’. [Continue reading…]

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Genes are overrated

Nathaniel Comfort writes: In the Darwinian struggle of scientific ideas, the gene is surely among the select. It has become the foundation of medicine and the basis of vigorous biotechnology and pharmaceutical industries. Media coverage of recent studies touts genes for crime, obesity, intelligence — even the love of bacon. We treat our genes as our identity. Order a home genetic-testing kit from the company 23andMe, and the box arrives proclaiming, “Welcome to you.” Cheerleaders for crispr, the new, revolutionarily simple method of editing genes, foretell designer babies, the end of disease, and perhaps even the transformation of humanity into a new and better species. When we control the gene, its champions promise, we will be the masters of our own destiny.

The gene has now found a fittingly high-profile chronicler in Siddhartha Mukherjee, the oncologist-author of the Pulitzer Prize–winning The Emperor of All Maladies, a history of cancer. The Gene’s dominant traits are historical breadth, clinical compassion, and Mukherjee’s characteristic graceful style. He calls it “an intimate history” because he shares with us his own dawning awareness of heredity and his quest to make meaning of it. The curtain rises on Kolkata, where he has gone to visit Moni, his paternal cousin, who has been diagnosed with schizophrenia. In addition to Moni, two of the author’s uncles were afflicted with “various unravelings of the mind.” Asked for a Bengali term for such inherited illness, Mukherjee’s father replies, “Abheder dosh” — a flaw in identity. Schizophrenia becomes a troubling touchstone throughout the book. But the Indian interludes are tacked onto an otherwise conventional triumphalist account of European-American genetics, written from the winners’ point of view: a history of the emperor of all molecules. [Continue reading…]

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A skeptic bashing Skeptics

John Horgan, in a slightly edited version of a talk he gave recently at Northeast Conference on Science and Skepticism, writes: I hate preaching to the converted. If you were Buddhists, I’d bash Buddhism. But you’re skeptics, so I have to bash skepticism.

I’m a science journalist. I don’t celebrate science, I criticize it, because science needs critics more than cheerleaders. I point out gaps between scientific hype and reality. That keeps me busy, because, as you know, most peer-reviewed scientific claims are wrong.

So I’m a skeptic, but with a small S, not capital S. I don’t belong to skeptical societies. I don’t hang out with people who self-identify as capital-S Skeptics. Or Atheists. Or Rationalists.

When people like this get together, they become tribal. They pat each other on the back and tell each other how smart they are compared to those outside the tribe. But belonging to a tribe often makes you dumber.

Here’s an example involving two idols of Capital-S Skepticism: biologist Richard Dawkins and physicist Lawrence Krauss. Krauss recently wrote a book, A Universe from Nothing. He claims that physics is answering the old question, Why is there something rather than nothing?

Krauss’s book doesn’t come close to fulfilling the promise of its title, but Dawkins loved it. He writes in the book’s afterword: “If On the Origin of Species was biology’s deadliest blow to supernaturalism, we may come to see A Universe From Nothing as the equivalent from cosmology.”

Just to be clear: Dawkins is comparing Lawrence Krauss to Charles Darwin. Why would Dawkins say something so foolish? Because he hates religion so much that it impairs his scientific judgment. He succumbs to what you might call “The Science Delusion.” [Continue reading…]

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Whatever you think, you don’t necessarily know your own mind

Keith Frankish writes: Do you think racial stereotypes are false? Are you sure? I’m not asking if you’re sure whether or not the stereotypes are false, but if you’re sure whether or not you think that they are. That might seem like a strange question. We all know what we think, don’t we?

Most philosophers of mind would agree, holding that we have privileged access to our own thoughts, which is largely immune from error. Some argue that we have a faculty of ‘inner sense’, which monitors the mind just as the outer senses monitor the world. There have been exceptions, however. The mid-20th-century behaviourist philosopher Gilbert Ryle held that we learn about our own minds, not by inner sense, but by observing our own behaviour, and that friends might know our minds better than we do. (Hence the joke: two behaviourists have just had sex and one turns to the other and says: ‘That was great for you, darling. How was it for me?’) And the contemporary philosopher Peter Carruthers proposes a similar view (though for different reasons), arguing that our beliefs about our own thoughts and decisions are the product of self-interpretation and are often mistaken.

Evidence for this comes from experimental work in social psychology. It is well established that people sometimes think they have beliefs that they don’t really have. For example, if offered a choice between several identical items, people tend to choose the one on the right. But when asked why they chose it, they confabulate a reason, saying they thought the item was a nicer colour or better quality. Similarly, if a person performs an action in response to an earlier (and now forgotten) hypnotic suggestion, they will confabulate a reason for performing it. What seems to be happening is that the subjects engage in unconscious self-interpretation. They don’t know the real explanation of their action (a bias towards the right, hypnotic suggestion), so they infer some plausible reason and ascribe it to themselves. They are not aware that they are interpreting, however, and make their reports as if they were directly aware of their reasons. [Continue reading…]

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