Showing posts with label intelligence. Show all posts
Showing posts with label intelligence. Show all posts

June 6, 2010

Clay Shirky: The Internet Makes You Smarter

New book: Cognitive Surplus: Creativity and Generosity in a Connected Age in which Clay Shirky argues that, amid the silly videos and spam, are the roots of a new reading and writing culture.

Excerpt from the WSJ review:
The case for digitally-driven stupidity assumes we'll fail to integrate digital freedoms into society as well as we integrated literacy. This assumption in turn rests on three beliefs: that the recent past was a glorious and irreplaceable high-water mark of intellectual attainment; that the present is only characterized by the silly stuff and not by the noble experiments; and that this generation of young people will fail to invent cultural norms that do for the Internet's abundance what the intellectuals of the 17th century did for print culture. There are likewise three reasons to think that the Internet will fuel the intellectual achievements of 21st-century society.

First, the rosy past of the pessimists was not, on closer examination, so rosy. The decade the pessimists want to return us to is the 1980s, the last period before society had any significant digital freedoms. Despite frequent genuflection to European novels, we actually spent a lot more time watching "Diff'rent Strokes" than reading Proust, prior to the Internet's spread. The Net, in fact, restores reading and writing as central activities in our culture.

The present is, as noted, characterized by lots of throwaway cultural artifacts, but the nice thing about throwaway material is that it gets thrown away. This issue isn't whether there's lots of dumb stuff online—there is, just as there is lots of dumb stuff in bookstores. The issue is whether there are any ideas so good today that they will survive into the future. Several early uses of our cognitive surplus, like open source software, look like they will pass that test.

What the internet is doing to our brains

New book: The Shallows by Nicholas Carr on how the internet is changing the way we think.

Excerpt from the NYT review:
For Carr, the analogy is obvious: The modern mind is like the fictional computer. "I can feel it too," he writes. "Over the last few years, I've had an uncomfortable sense that someone, or something, has been tinkering with my brain, remapping the neural circuitry, reprogramming the memory." While HAL was silenced by its human users, Carr argues that we are sabotaging ourselves, trading away the seriousness of sustained attention for the frantic superficiality of the Internet. As Carr first observed in his much discussed 2008 article in The Atlantic, "Is Google Making Us Stupid?," the mere existence of the online world has made it much harder (at least for him) to engage with difficult texts and complex ideas. "Once I was a scuba diver in a sea of words," Carr writes, with typical eloquence. "Now I zip along the surface like a guy on a Jet Ski."

This is a measured manifesto. Even as Carr bemoans his vanishing attention span, he's careful to note the usefulness of the Internet, which provides us with access to a near infinitude of information. We might be consigned to the intellectual shallows, but these shallows are as wide as a vast ocean.

Nevertheless, Carr insists that the negative side effects of the Internet outweigh its efficiencies. Consider, for instance, the search engine, which Carr believes has fragmented our knowledge. "We don't see the forest when we search the Web," he writes. "We don't even see the trees. We see twigs and leaves." One of Carr's most convincing pieces of evidence comes from a 2008 study that reviewed 34 million academic articles published between 1945 and 2005. While the digitization of journals made it far easier to find this information, it also coincided with a narrowing of citations, with scholars citing fewer previous articles and focusing more heavily on recent publications. Why is it that in a world in which everything is available we all end up reading the same thing?

June 24, 2009

Ranking the most powerful forces in the Universe

There are a large number of forces at work in the Universe, some more powerful than others -- and I'm not talking about the four fundamental forces of nature. A force in the context I'm talking about is any phenomenon in Universe that exhibits a powerful effect or influence on its environment. Many of these phenomenon quite obviously depend on the four basic forces to function (gravity, electromagnetism, the weak interaction and the strong interaction), but it's the collective and emergent effects of these fundamental forces that I'm interested in.

And when I say power I don't just mean the capacity to destroy or wreak havoc, though that's an important criteria. A force should also be considered powerful if it can profoundly reorganize or manipulate its environment in a coherent or constructive way.

Albert Einstein once quipped that the most powerful force in the Universe was compound interest. While he does have a point, and with all due respect to the Master, I present to you my list of the four most powerful phenomenon currently making an impact in the Universe:

4. Supermassive Black Holes

There's no question that black holes are scary; it's the only part of the Universe that can truly destroy itself.

Indeed, Einstein himself, whose Theory of Relativity opened the door to the modern study of black holes, noted that "they are where God has divided by zero." And it's been said that the gravitational singularity, where the laws of physics collapse, is the most complex mystery of science that still defies human knowledge.

Somewhat counterintuitively, black holes take the weakest of the four basic forces, gravity, to create a region of space with a gravitational field so powerful that nothing, not even light, can escape its pull. They're called "black" because they absorb all the light that hits them and reflect nothing. They have a one-way surface, the event horizon, into which objects can fall, but out of which nothing (save for Hawking Radiation) can escape.

Black holes can also vary in size and gravitational intensity. Supermassive black holes are a million to a billion times the mass of a typical black hole. Most galaxies, if not all, are believed to contain supermassive black holes at their centers (including the Milky Way).

And recent studies are now suggesting that they are much larger than previously thought. Computer models reveal that the supermassive black hole at the heart of the giant galaxy M87 weighs the same as 6.4 billion suns—two to three times heavier than previous estimates.

That's a lot of pull.

Indeed, should anything have the misfortune of getting close enough to a supermassive black hole, whether it be gas, stars or entire solar systems, it would be sucked into oblivion. Its gravitational pull would be so overwhelming that it would hurl gas and stars around it at almost the speed of light; the violent clashing would heat the gas up to over a million degrees.

Some have suggested that the supermassive black hole is the most powerful force in the Universe. While its ability to destroy the very fabric of space and time itself is undeniably impressive (to say the least), its localized and limited nature prevent it from being ranked any higher than fourth on my list. A black hole would never subsume an entire Galaxy, for example, at least not within cosmologically long time frames.

3. Gamma-Ray Bursts

The power of gamma-ray bursts (GRB) defies human comprehension.

Imagine a hypergiant star at the end of its life, a massive object that's 150 times larger than our own. Extremely high levels of gamma radiation from its core is causing its energy to transform to matter. The resultant drop in energy causes the star to collapse. This results in a dramatic increase in the thermonuclear reactions that was burning within it. All this added energy overpowers the gravitational attraction and it explodes in a fury of energy -- the hypergiant has gone hypernova.

This is not the stuff of fiction or theory -- explosions like this have been observed. Hypernovas of this size can instantly expel about 10X46 joules. This is more energy than our sun produces over a period of 10 billion years. 10 billion years! In one cataclysmic explosion!

Hypernovas can wreak tremendous havoc in its local area, effectively sterilizing the region. These explosions produce highly collimated beams of hard gamma-rays that extend outward from the exploding star. Any unfortunate life-bearing planet that should come into contact with those beams would suffer a mass extinction (if not total extinction depending on its proximity to the supernova). Gamma-rays would eat up the ozone layer and indirectly cause the onset of an ice age due to the prevalence of NO2 molecules.

Supernovas can shoot out directed beams of gamma-rays to a distance of 100 light years, while hypernovas disburse gamma ray bursts as far as 500 to 1,000 light years away.

We are currently able to detect an average of about one gamma-ray burst per day. Because gamma-ray bursts are visible to distances encompassing most of the observable Universe -- a volume encompassing many billions of galaxies -- this suggests that gamma-ray bursts are exceedingly rare events per galaxy. Determining an exact rate is difficult, but for a galaxy of approximately the same size as the Milky Way, the expected rate (for hypernova-type events) is about one burst every 100,000 to 1,000,000 years.

Thankfully, hypergiant Eta Carinae, which is on the verge of going nova, is well over 7,500 light years away from Earth. We'll be safe when it goes off, but you'll be able to read by its light at night-time.

But not so fast -- our safety may not be guaranteed. Some scientists believe that gamma-ray busters may be responsible for sterilizing giagantic swaths of the galaxy -- in some cases as much as a quarter of the galaxy. Such speculation has given rise to the theory that gamma-ray bursters are the reason for the Fermi Paradox; exploding stars are continually stunting the potential for life to advance, making it the 3rd most powerful force in the Universe.

2. Self-Replication

A funny thing started to happen about 8 billion years ago: pieces of the Universe started to make copies of itself. This in turn kindled another phenomena: natural selection.

While this might not seem so impressive or powerful in its own right, it's the complexification and the emergent effects of this process that's interesting; what began as fairly straight forward cellular replication, at least on Earth, eventually progressed into viruses, dinosaurs, and human beings.

Self-replicating RNA/DNA has completely reshaped the planet, its surface and atmosphere molded by the processes of life. And it's a process that has proven to be remarkably resilient. The Earth has been witness to some extremely calamitous events over its history, namely the Big Five Mass Extinctions, but life has picked itself up, dusted off, and started anew.

Now, what makes self-replication all the more powerful is that it is not limited to biological substrate. Computer viruses and memes provide other examples of how self-replication can work. Replicators can also be categorized according to the kind material support they require in order to go about self-assembly. In addition to natural replicators, which have all or most of their design from nonhuman sources (i.e. natural selection), there's also the potential for:
  • Autotrophic replicators: Devices that could reproduce themselves in the wild and mine their own materials. It's thought that non-biological autotrophic replicators could be designed by humans and could easily accept specifications for human products.
  • Self-reproductive systems: Systems that could produce copies of itself from industrial feedstocks such as metal bar and wire.
  • Self-assembling systems: Systems that could assemble copies of themselves from finished and delivered parts. Simple examples of such systems have been demonstrated at the macro scale.
It's conjectured that a particularly potent form of self-replication will eventually come in the form of molecular manufacturing and the introduction of self-replicating nanobots. One version of this vision is connected with the idea of swarms of coordinated nanoscale robots working in tandem.

Microscopic self-replicating nanobots may not sound particularly powerful or scary, but what is scary is the prospect for unchecked exponential growth. A fear exists that nanomechanical robots could self-replicate using naturally occurring materials and consume the entire planet in their hunger for raw materials. Alternately they could simply crowd out natural life, outcompeting it for energy. This is what has been referred to as the grey goo or ecophagy scenario. Some estimates show, for example, that the Earth's atmosphere could be destroyed by such devices in a little under two years.

Self-replication is also powerful in terms of what it could mean for interstellar exploration and colonization. By using exponentially self-replicating Von Neumann probes, for example, the Galaxy could be colonized in as little as one to ten million years.

And of course, if you can build you can destroy; the same technology could be used to sterilize the Galaxy in the same amount of time [for more on this topic read my article, "Seven ways to control the Galaxy with self-replicating probes"].

Consequently, self-replication sits at #2 on my list; its remarkable ability to reshape matter, adapt, grow, consume, build and destroy make it a formidable force to be reckoned with.

1. Intelligence

Without a doubt the most powerful force in the universe is intelligence.

The capacity to collect, share, reorganize and act on information is unlike anything else in this universe. Intelligent beings can build tools, adapt to and radically change their environment, create complex systems and act with reasoned intention. Intelligent beings can plan, solve problems, think abstractly, comprehend ideas, use language and learn.

In addition, intelligence can reflect on itself, predict outcomes and avoid peril; autonomous systems, for the most part, are incapable of such action.

Humanity, a particularly intelligent bunch owing to a few fortuitous evolutionary traits, has -- for better or worse -- become a force of nature on Earth. Our species has reworked the surface of the planet to meet its needs, significantly impacting on virtually every other species (bringing many to extinction) and irrevocably altering the condition of the atmosphere itself. Not content to stay at home, we have even sent our artifacts into space and visited our very own moon.

While some cynics may scoff at so-called human 'intelligence', there's no denying that it has made a significant impact on the biosphere.

Moreover, what we think of as intelligence today may be a far cry from what's possible. The advent of artificial superintelligence is poised to be a game-changer. A superintelligent agent, which may or may not have conscious or subjective experiences, is an intellect that is much smarter than the best human brains in practically every field, including problem solving, brute calculation, scientific creativity, general wisdom and social skills. Such entities may function as super-expert systems that work to execute on any goal it is given so long as it falls within the laws of physics and it has access to the requisite resources.

That's
power. And that's why it's called the Technological Singularity; we have no idea how such an agent will behave once we get past the horizon.

Another more radical possibility (if that's not radical enough) is that the future of the Universe itself will be influenced by intelligent life. The nature of intelligence and its presence in the Universe must always be called into question. There exists only one of two possibilities: intelligence is either 1) cosmological epiphenomenon, or 2) an intrinsic part of the Universe's inner workings. If it's the latter, perhaps we have some work to do in the future to ensure the Universe's survival or to take part in its reproductive strategy.

Theories already exist in regards to stellar engineering -- where a local sun could be tweaked in such a way to extend its lifespan. Future civilizations may eventually figure out how to re-engineer the Universe itself (such as re-working the constants) or create an escape hatch to basement universes. Thinkers who have explored these possibilities include Milan Cirkovic, John Smart, Ray Kurzweil, Alan Guth and James N. Gardner (for example, see Gardner's book Biocosm: The New Scientific Theory of Evolution: Intelligent Life is the Architect of the Universe).

Intelligence as a force may not be particularly impressive today when considered alongside supermassive black holes, gamma-ray bursts and exponential self-replication. But it may be someday. The ability of intelligence to re-engineer its environment and work towards growth, refinement and self-preservation give it the potential to become the most powerful force in the Universe.

May 16, 2009

If I Can’t Dance, I Don’t Want to Be Part of Your Revolution!

(incorrectly but fittingly ascribed to Emma Goldman, feminist, activist, trouble-maker)

Athena Andreadis is guest blogging this month.

Those who know my outermost layer would consider me a science geek. I’m a proponent of genetic engineering, an advocate of space exploration, a reader and writer of science fiction. However, I found myself unable to warm to either transhumanism or its literary sidekick, cyberpunk. I ascribed this to the decrease of flexibility that comes with middle age and resumed reading Le Guin’s latest story cycle.

But the back of my mind gnawed over the discrepancy. After all, neither transhumanism nor cyberpunk are monolithic, they come in various shades of… and then it hit me… gray. Their worlds contain little color or sound, few scents, hardly any plants or animals. Food and sex come as pills, electric stimuli or IV drips; almost all arts and any sciences not related to individual enhancement have atrophied, along with most human activities that don’t involve VR.

And I finally rea
lized why I balk at cyberpunk and transhumanism like an unruly horse. Both are deeply anhedonic, hostile to physicality and the pleasures of the body, from enjoying wine to playing in an orchestra. I wondered why it had taken me so long to figure this out. After all, many transhumanists use the repulsive (and misleading) term “meat cage” to describe the human body, which they deem a stumbling block, an obstacle in the way of the mind.

This is hoary dualism disguised as futuristic thinking, augmented by healthy doses of queasiness and power fantasies. Ascetics of other eras tried to diminish the body by fasting, flagellating, abstaining from all physical gratification from washing to sex. Techno-monks want to discard it altogether. The goal is a disembodied mind playing World of Warcraft in a VR datastream. If a body is tolerated at all, the ideal is a mixture of metal and ceramic, hairless and poreless, though it still retains the hyper-gendered configurations possible only in cartoons.

Is abandonment of the body such a bad thing? As anyone who lost a limb or went through a major illness can attest, it’s a marvelous instrument
whose astonishing abilities become obvious only when it malfunctions. On the other hand, it’s undeniably fragile and humans have lost patience with its shortcomings as technology has overtaken nature. Transhumanists extol such prospects as anti-aging medicine; advanced prosthetics; radical cosmetic surgery, including sex changes; nootropic drugs; and carbon-silicon interfaces, from cyborgs to immersive VR.

I don’t know a single woman who, given the choice, would opt to retain menstruation, pregnancy or menopause (though few would admit it openly). And very few people, no matter how stoic, can face the depradations of chronic disease or age with equanimity. The neo-Rupturists who prophesy the coming
of the Singularity can hardly wait to exchange their bodies with versions that will never experience memory lapses or fail to achieve erections at will.

I’m no Luddite, bio or otherwise. I am glad that technology has enabled us to lead lives that are comfortable, leisured and long enough that we can explore the upper echelons of the hierarchy of needs. However, we demean the body at our peril. It’s not the passive container of our mind; it is its major shaper and inseparable partner. If we discard our bodies we run the danger of losing context to our lasting detriment – as we have already done by successive compartmentalizations and sunderings.

Humans are inherently social animals that developed in response to feedback loops between the environment and their own evolving form. Like all lifeforms, we’re jury-rigged. Furthermore, humans are mediocre across the entire spectrum of physical prowess, from range of vision to maximum running speed. Yet this mediocrity probably enabled us to occupy many environmental niches successfully before technology allowed us to impose our wishes on our environment. Optimizing in any direction may push us into dead-end corners, something that has happened to many species we engineered extensively.

This also holds true for our
brains. It’s a transhumanist article of faith that intelligence can and must be augmented – but there are many kinds of intelligence. A lot of learning is mediated through the body, from using a screwdriver properly to gauging complex social interactions. Short-circuiting this type of learning results in shallow knowledge that may not become integrated into long-term memory. There is a real reason for apprenticeships, despite their feudal overtones: people who use Photoshop, CAD and laboratory kits without prior “traditional” training frequently make significant errors and often cannot critically evaluate their results. Furthermore, without corrective “pingbacks” from the environment that are filtered by the body, the brain can easily misjudge to the point of hallucination or madness, as seen in phenomena like phantom limb pain.

Another feedback loop is provided by the cortical emotions, which enable us to make decisions. Two prominent side effects of many nootropic drugs are flattening of the emotions and suppression of creativity. Far from fine-tuning perception, the drugs act as blunting hammers. Finally, if we evade our bodies by uploading into a silicon frame (biologically impossible, but let’s grant it as a hypothesis), we may lose the capacity for empathy, as shown in Bacigalupi’s disturbing story People of Sand and Slag. Empathy is as instrumental to high-order intelligence as it is to survival: without it, we are at best idiot savants, at worst psychotic killers.

I do believe that our bodies can be improved. Nor does everything have to remain as it is now. I wouldn’t mind having wings t
hat could truly lift me; even less would I mind living without fear of cancer or diabetes. Yet I’m fairly certain that we have to stick with carbon if we want seamless form and function. When I hear talk of "upgrading" to silicon or to ether, I get a strong whiff of cubicleers imagining themselves as Iron Man or Neo. Being alone inside a room used to be a punishment. Being imprisoned inside one’s head is a recipe for insanity. Without our bodies, we bid fair to become not exalted intellects but mad(wo)men in the attic.

Athena

Starship Reckless
It's All in Your Head
The Left Hand of Light

January 29, 2009

Rethinking IQ: The rise of 'rational intelligence'


Our conceptions of intelligence certainly aren't what they used to be -- and they're continuing to evolve. Prior to the advent of computers it was thought that number crunching and pure logic was the penultimate measure of intelligence. But after the invention of the calculator, which could suddenly do math thousands of times better than we ever could, we were forced to shift our definitions of intelligence to other seemingly more intractable cognitive functions.

These days a number of psychologists have gone even further by de-emphasizing the importance of IQ tests altogether. Instead, they talk about "supracognitive" characteristics -- theories about emotional and social intelligence, which weigh interpersonal skills and the ability to empathize. These cognitive abilities are now typically placed alongside other 'harder' measures of intelligence.

Now add to this list what Keith E. Stanovich calls 'rational intelligence.' Stanovich, author of What Intelligence Tests Miss: The Psychology of Rational Thought, believes that the concept of intelligence, as measured by IQ tests, fails to capture key aspects of mental ability.

That said, he doesn't discount the tests' credibility: "Readers might well expect me to say that IQ tests do not measure anything important, or that there are many kinds of intelligence, or that all people are intelligent in their own way," he writes.

Rather, Stanovich suggests that IQ tests should be adjusted to focus on valuable qualities and capacities that are highly relevant to our daily lives. He argues that IQ tests would be far more effective if they took into account not only mental "brightness" but also rationality — including such abilities as "judicious decision making, efficient behavioral regulation, sensible goal prioritization ... [and] the proper calibration of evidence."

Stanovich believes that our conceptions of intelligence are confused and that we've conflated the whole idea of "smarts." IQ tests, he argues, do not measure the rationality required to abstain from dumb decisions. But in practical life, we define intelligence more broadly and look out for these kinds of rational weaknesses: "Blatantly irrational acts committed by people of obvious intelligence ... shock and surprise us and call out for explanation."

And as long as we continue to worship IQ tests that do not assess rational thought processes, warns Stanovich, we will continue to misjudge our own and others' cognitive abilities.

More.