technology

Krystal D'Costa (Anthropology in Practice) links to a mini-documentary about the role of social media in the education of "Gen-Y": "Decade 2: Encouraging Educators to Rethink Social Media Strategies in the Classroom."

First, that these subjects are operating in a world that didn't exist five years ago. Some hold job titles like Social Media Strategist, and others are entrepreneurs who can shape their job as they want and need using social tools. These are individuals who have learned early the power of technology and shared communication, and they've harnessed it. Second, they're aware that they have needed to find their way in the dark. Several individuals in the documentary discuss how poorly prepared they feel their education has left them. This is an interesting statement when one considers reports that this not a tech savvy generation. And it prompts one to question whether the educational system can support the changing face of connectedness and business overall.

Are teenagers and college students learning about social media in the same way they learn about the birds and the bees -- mainly from their peers? Only a handful are really learning to control the media in their lives. People who end up in jobs like "Social Media Strategist" are the result of some kind of uncontrolled selection experiment.

Which maybe is as it should be. Uncontrolled selection experiments are pretty much how most successful people get started, I guess.

Coming soon: elderly cyborg farmers?

MANUAL labour is becoming more and more difficult for Japan's aging farmers, prompting a Tokyo professor to devise a high-tech solution: mechanise the bodies of the farmers themselves.

We have a course on the books here called "Human dimensions of robotics." It hasn't been taught for many, many years. I imagine it began as a labor relations course in the 1970s, when robots were becoming a big issue in factory work. Anyway, I've often thought it may be time to revive the title, with a very different focus.

(via Ann Althouse)

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From the Chronicle of Higher Education, an article by Jeffrey Young: "College 2.0: Teachers Without Technology Strike Back."

I think that the article confuses matters by lumping together people with many different aims. Which I guess is sort of the point of all "technology in college" conversations. Different applications require different pedagogical approaches. There's no sense pointing out "Luddites" unless you can show the way that a particular technology would increase their effectiveness. A college's investment in teachers is a whole lot more expensive than the investment in clickers, projectors, online courseware, and the rest.

Nevertheless it's entertaining to see cherry-picked examples of professors proudly rejecting technology:

His professor made students write short papers and then gave extensive feedback, which forced them to hone their arguments and express themselves more clearly. And he made them write out the papers in longhand, in blue books, during class. "There's something about the immediacy or exigency of it," Mr. Leeds said. "When I took those written exams, I found that I made connections that I didn't know I knew—it shook up my brain cells like a supernova."

So today Mr. Leeds requires his students to write short, in-class papers. In blue books. By hand. Just like his favorite professor did.

From the comments:

No wonder some people would rather go to jail than to college.

Many have the same attitude about Powerpoint, I know.

Savage Minds' crew has been discussing the future of publishing in the American Anthropological Association recently. Rex Golub compares Open Folklore to AnthroSource:

How has OpenFolklore gotten on the road to success when AnthroSource has fallen so, so far off of it? To be honest, I don’t know the answer, but I can make several guesses: the association is much smaller, and probably much less controlled by non-academic executive officers. They probably recognize that they are in it for the love it, and that folklore is always going to be a marginal proposition, budget wise. The result is a small, relatively agile, values-driven group run by academics with their heads screwed on straight and willing to get their hands dirty. On other words, very very different from the AAA.

Christopher Kelty points to correspondence of the committee tasked with the future of publications.

One memo stands out though: the one by Kim Fortun, which she wrote as an advisory member and outgoing co-editor of Cultural Anthropology. [Full disclosure: yours truly and the debates on this site are cited several times within. She sent it to me for review, and I've posted it here with her permission]. Kim’s memo could be a handbook for understanding the current crisis and politics of scholarly publishing in general, and the promises, fulfilled and unfulfilled, of the AAA’s union with Wiley Blackwell, in particular. It is incredibly detailed, well-sourced, well organized and throughtful–far beyond the call of duty of a memo. I hope all the section assembly advisors get a chance to read it, as well as all the Section Assembly representatives and as much of the membership as possible.

He links directly to the memo (PDF), which is as he says -- a document that lays out the current problems with academic publishing as applied to the goals of the AAA.

I don't understand why AnthroSource had to be so difficult. Any moderately trafficked blog has much more usage than AnthroSource now has. Savage Minds and I together have more than 50 times the AnthroSource usage.

If you make papers open access, you can forget the rigmarole with logging in users, and then all you need is a search function and download links. Heck, I've got a bibliography of more than 11,000 papers running on the site now! The back-end could be done on a cloud server for less than $100 a month -- maybe a lot less. Same for bandwidth at its present, low level. Replace the dead tree printing of journals and extend open access worldwide, and bandwidth will be higher as will be the journals' reach.

It takes more to run the journals, handle new submissions, and provide editorial services. Some costs can be reduced by requiring every submission to be e-book-ready, plain HTML with PNG images. "Production" should be proofing and posting. It would have the beneficial effect of making articles automatically accessible for the visually-impaired, through screen-reader software. Marketing the journals as e-book subscriptions could recoup these costs at a much lower price than the current membership model.

It may not be the best solution, but anybody who wants to spend a whole lot more needs to show why the benefits justify the cost.

Kent Anderson: "Do you really need all that website?"

We reflect site-centric thinking when we do usability testing, for instance. I’ll bet that most of your usability testing has been about the site, and not about the usability of the complement of information options you use or could use. Did you ask if the email you send is usable and ties nicely with the site? Did you ask if landing on your site from Google made sense? Or were you just testing the usability of your site? If so, that’s site-centric, and potentially part of the trap that keeps us in the rut.

Because of habits of mind like this, we’ve probably over-engineered our site offerings. And with online still severely undervalued as a communication medium, these lavish expenditures may not earn back.

He's focused on scholarly publication, but I'm thinking about all the departmental websites I've seen designed -- heck, I spent one summer designing one! They establish a brand, but have the basic requirements of providing directory and archival documents (e.g., course requirements), while providing accessibility.

I like the essay, full of quotables.

Is there really a premium for “pretty” among scholarly Web sites?

Having just dealt with the forced migration of a journal management system, and terminal stupidity of another one, I wonder why things have to be so complicated!

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From Dave Winer's discussion of bootstrapping and Web 2.0 technologies:

One of the spookiest bootstraps is the process of writing a Pascal compiler (or any language, nothing special about Pascal). You start by writing a very simple compiler in assembly language. Get it working with some sample programs, then start writing a new Pascal compiler, in Pascal, and compile it with your compiler written assembly language. Keep working on it until you have enough features to comple the compiler with itself. Then you can throw out the assembly language one. That story really spooks people, but swear to god, that's how compilers are built.

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Creepy:

Silk has made its way from the soft curves of the body to the spongy folds of the brain. Engineers have now designed silk-based electronics that stick to the surface of the brain, similar to the way a silk dress clings to the hips.

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Not a comment on anyone in particular, but I'm beginning to wonder if some Twitter users are actually robots. I mean, how exactly does one follow thousands of other users?

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Tried out an iPad this afternoon. It's a slick little device, very nice looking for games. Some people have commented on iPhone apps looking ugly on the larger screen; it seemed to me that the demo games weren't noticeably pixelated, but maybe that's why they're demos.

The astronomy app had a much nicer interface than Google Sky and I could easily imagine carrying the small device outside for a few hours at night.

They're not trying very hard to sell it to me, though. I wanted to see how well the drawing apps worked -- Sketchbook Pro would be ideal, but I'd settle for trying the feel of any of them. Not a single demo unit in the store had a drawing app on it. Also, weirdly, iBooks wasn't working on the demo units.

The blog looked fine -- welcome all you iPad-enabled readers -- although I can see that a two-column format would be better than three on that size display. I'll have to think about that moving forward. The trend in the early-2000's was always toward bigger and bigger layouts, but now we have to think about mobile devices.

Sophie would very willingly have carried one right out the door. It may be the perfect computing device for 9-year-old girls. Goodwin, on the other hand, was not all that interested. Even the car racing game didn't grab him.

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An unexpected source of decompression sickness: the U-2 spy plane.

As the number of flights increases, some of the plane’s 60 pilots have suffered from the same disorienting illness, known as the bends, that afflicts deep-sea divers who ascend too quickly.

Relaxing recently in their clubhouse at Beale Air Force Base near Sacramento, Calif., the U-2’s home base, several pilots said the most common problems are sharp joint pain or a temporary fogginess.

I lecture every year about high-altitude adaptation in humans, but this is a nice example of the opposite!

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An article about classical composer David Cope and the AI programs he wrote to make original music. It's not new news, but a nice profile with many "what does it mean to be creative?" moments.

Cope had taken an unconventional approach. Many artificial creativity programs use a more sophisticated version of the method Cope first tried with Bach. It’s called intelligent misuse — they program sets of rules, and then let the computer introduce randomness. Cope, however, had stumbled upon a different way of understanding creativity.

In his view, all music — and, really, any creative pursuit — is largely based on previously created works. Call it standing on the shoulders of giants; call it plagiarism. Everything we create is just a product of recombination.

I'd call it "culture". The long-term direction may look random, but "styles" cohere over time because people take from each other. The article's leitmotif is Cope's near-Quixotic quest to write a truly life-changing piece of music. It's ironic that he discovers how to make music that humans can't tell from yesterday's classics, but tomorrow's classics will be determined by those very same human arbitrers of taste.

After last week's unveiling of Apple's iPad, there has been a quiet current of dismay by people looking for a not-yet piece of hardware. I have some sympathy for the perspective of Mark Pilgrim, in his piece, "Tinkerer's Sunset". It begins:

When DVD Jon was arrested after breaking the CSS encryption algorithm, he was charged with “unauthorized computer trespassing.” That led his lawyers to ask the obvious question, “On whose computer did he trespass?” The prosecutor’s answer: “his own.”

If that doesn’t make your heart skip a beat, you can stop reading now.

Pilgrim goes on to describe a personal history of programming, starting as a kid on the Apple ][e -- a history that basically mirrors my own experiences learning to code. He contrasts this history with the recent trend -- in the iPhone, iPod Touch and now iPad -- to exert more control over the programs that can run on these Apple platforms. Can Pilgrim's kids expect to learn programming with the freely accessible tools that used to exist on every computer?

Well, I'm not as reticent about the iPad development system. For one thing, the entire development kit is available, it's just not free. I don't see how this is really any different than paying for the Pascal compiler I used on the Apple IIgs in 1987, or paying for Microsoft BASIC on the PC. For another thing, today's Macs all come with the Xcode tools free and Python preinstalled. Python is a darned sight better to learn programming than BASIC was, and you can run Python scripts on the iPhone, and presumably the iPad too.

The real concern here is between "cheap" and "cool". The iPad looks like it will be cool; meaning a kid can get lots of nerd cred by doing magical tricks with it. Now, the same kid could use a $150 desktop with Ubuntu and open source compilers to program magical tricks. That would leave $450 left in his pocket, that he saved by not buying the iPad and developer kit. He could use that to pay for three years of hosting his magical trick, or two years with a modest Google ad.

I get that the Ubuntu box isn't as cool. And that many kids are a lot more likely to get a little time on a parent's cool tablet than to get their own $150 box. But does it make sense to say that a new product restricts freedom, when we live in a world now that lacks the product entirely? I'd say it adds a certain kind of freedom, for users who want it, and fails to add others.

Anyway, for a less nuanced critique, I'll link to "iPad Snivelers: Put Up or Shut Up"

The iPad isn't a threat to anything except the success of inferior products. And if anything's dystopian about the future it portends, it's an American copyright system that's been out of whack since 1996.

I'm not sure that's true. The rapid pace of hardware evolution means that software is for all intents and purposes useless after fifteen or twenty years. There might be something in Windows 3.0 or Mac System 7 that would be useful today, but probably not in comparison to open source alternatives. In the software sense it doesn't matter if copyrights expire in 17 years or 95, unless you're a modder who wants to make an iPhone version of old Nintendo ROMs.

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Clearly the human non-furry skin phenotype is meant for more efficient heat transfer energy generation:

Vladimir Leonov and Ruud Vullers of the Interuniversity Microelectronics Center have developed power supplies that can run off of your body heat. All you have to do is strap on the blingtastic headband you see here, and you're ready to go.

Your body dissipates anywhere between 60 and 140 watts of waste heat just from staying alive. Of course, evolution has crafted much of your body surface to minimize the heat gradient at the skin-air interface. But there are various warm bumps and nubbins that would allow the generation of several watts. One might imagine a next-generation iPhone with a heads-up display, powered by heat from your temples.

The story discusses military applications, which I can't imagine working very well in many environments, since it's hard to capture energy from waste heat when the ambient temperature exceeds your body temperature.

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Via a reader:

Sterkfontein Caves on Street View

It's not there yet, but Google is adding a gaggle of World Heritage Sites to the Street View feature, and Sterkfontein will be among them. An interesting detail:

Where access by car is not possible, Google uses its custom-made 'trike' – a three-wheeled bike mounted with a camera – to take the images. It will soon be used to collect imagery of the Sterkfontein Caves in SA.

Now, if they will just take us into the Silberberg Grotto...

For obscure reasons, I'm installing Windows 7 on one of my MacBooks. The installation has gone pretty smoothly. But the first thing I wanted to do was install Safari -- not because I'm a zealot or anything, but that's what I use on every other computer, and I don't see any sense using a different browser on this one.

So how does Microsoft welcome me back into the fold? Internet Explorer won't load apple.com, or any pages from apple.com. No problem loading any other website -- heck, I've got Firefox downloading now. Nope, just Apple, which loads fine right at this moment on the MacBook I'm typing this on.

Meanwhile, on the TV comes the new "Switchers" commercial, where the PC goes into a time warp of endless promises of stability from the past.

And where the heck is my bash prompt?

UPDATE (2009-11-10): A reader writes to remind me of Cygwin, which installs bash and other Unix utilities on Windows. Oh, it works like a charm. Backslashes have their place, but the file structure is not it.

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John Timmer gives a great summary of the new paper in Science covering the Complete Genomics sequencing method.

A surprising (to me, at least) fact:

But, because each of these nanoballs was so small, it's possible to do massive amounts of sequencing in parallel, simply by washing different solutions across the surface they were stuck to. The authors were able to get anywhere from 45- to 87-fold coverage of the genome—meaning that, on average, each base in the genome had been sequenced 45 or 87 times, respectively. That's just an average, of course, as chance will ensure that some sequences are under- or overrepresented. Still, given an algorithm designed to work with these specific results and the reference human genome sequence, Complete Genomics was able to get excellent coverage of the genome.

Oh, yeah -- the lede from the paper:

Validation of one genome data set demonstrates a sequence accuracy of about 1 false variant per 100 kilobases. The high-accuracy, affordable cost of $4,400 for sequencing consumables and scalability of this platform enable complete human genome sequencing for the detection of rare variants in large-scale genetic studies.

High-tech honey extraction, chimpanzee-style

Most people know that hunter-gatherer men hunt meat. Fewer people know the major secondary target for male foraging in many hunter-gatherer societies: honey. The resource is so highly valued that some men spend as much effort foraging for honey as they do hunting.

Chimpanzees also forage for honey. The use of tools to dig for, bash into, and dip honey out of bee nests or hives has long been known from many chimpanzee field sites. For example, Craig Stanford and colleagues (2000) described how chimpanzees in Bwindi-Impenetrable National Park, Uganda, use small sticks to forage for honey from the small nests of stingless bees, while they use much bigger sticks to get honey out of honeybee nests.

Two papers from this year have illustrated a new appreciation for the complexity of chimpanzee toolkits used for honey raiding. Crickette Sanz and David Morgan (2009) describe honey gathering by chimpanzees at the Goualougo, Congo field site, while Christophe Boesch and colleagues (2009) describe the technology used by chimpanzees at Loango, Gabon. Both are relatively new field sites, in which researchers have arrived recently or are still habituating the chimpanzees to their presence. Thus, the variations in chimpanzee behaviors at these sites are still being recognized and just starting to be reported.

Loango National Park is a relatively new field site. As the researchers there continue to habituate the chimpanzees, they have been gathering a series of observations on behaviors that occur differently in Loango compared to other field sites. According to Boesch et al. (2009:2), chimpanzees at the Loango field site do not crack nuts despite a local abundance of them. But far from being simpler in their material culture than other chimpanzees that do crack nuts, the Loango chimps make up for their lack of nutcracking with a complex package of tools for honey extraction:

Gathering honey from underground hives, similar to underground termite fishing in Goualougo, is special in the sense that chimpanzees cannot see where the resource is hidden and use the first tool, the perforator, as an exploratory tool to “feel” where the resource is located underground. In both cases, external indirect signs of food sources are visible (e.g., large termite mounds or small fragile Melipone-made tubes), but the nest itself is not visible and its exact location cannot be inferred. Therefore, chimpanzees have to investigate the soil in order to locate food that can be, in the case of Melipone underground nests, as much as 1 m deep and 70 cm lateral to the visible tube. Locating the underground chamber can take a human between 20 to 40 minutes (Boesch, pers. obs.). The successful locating of honey is apparent from honey sticking to the ends of perforators. To extract honey, a tunnel needs to be dug sideways so as to reach the underground chamber and prevent soil from getting mixed with the honey once the membrane of the chamber is broken (in general, the intact upper membrane of the chamber in the emptied hole can be felt). We think that such tunnels are dug with the help of perforators to loosen the soil. These tunnels are sometimes barely large enough to let a human arm through, and therefore indicate that chimpanzees know exactly where they are aiming. This cannot be done by simply following the bee tube, as it is much too fragile to resist the tool-assisted digging process. Thus, an elaborate understanding of unseen nest structure, combined with a clear appreciation that tools permit the location of unseen resources, and a precise three-dimensional sense of geometry for reaching the honey chamber from the correct angle, is demonstrated by the chimpanzees when extracting underground honey. It has been proposed that an elaborate understanding of causal relationships between external objects is required for flexible tool use to evolve (Boesch and Boesch-Achermann, 2000), and the fact that such exploratory tools are only seen in chimpanzees and humans supports this proposition (Boesch et al. 2009).

I liked the authors' description of how they defined tool types and categorized objects on the basis of signs of use. WIth quite a simple technology, this differentiation appears nevertheless to be of a similar extent to the stone toolkits used by early Homo. What is different is the complexity of manufacture of (some of) the elements of the toolkit.

That topic of basic manufacturing method versus within-toolkit differentiation is addressed by a new study by Thibaud Gruber and colleagues (2009):

Here, we present the results of a field experiment [20] and [21] that compared the performance of chimpanzees (P. t. schweinfurthii) from two Ugandan communities, Kanyawara and Sonso, on an identical task in the physical domain—extracting honey from holes drilled into horizontal logs. Kanyawara chimpanzees, who occasionally use sticks to acquire honey [4], spontaneously manufactured sticks to extract the experimentally provided honey. In contrast, Sonso chimpanzees, who possess a considerable leaf technology but no food-related stick use [4] and [22], relied on their fingers, but some also produced leaf sponges to access the honey. Our results indicate that, when genetic and environmental factors are controlled, wild chimpanzees rely on their cultural knowledge to solve a novel task.

The finer points of tool use lie atop a technological substrate. For one group of chimpanzees, this substrate may be sticks, for another stones (in nutcracking), for another leaves. Social learning may tend to associate some raw materials with manipulatory processes -- a chaïne operatoire, at a very simple level. The complexity of the honey-extraction kits appears to show that, at least for highly valued purposes, chimpanzees can bring together distinct elements into a single technological solution. It's nothing that a three-year-old human can't do, but it's another point in favor of Wynn and McGrew's "Ape's view of the Oldowan" argument.

References:

Boesch C, Head J, Robbins MM. 2009. Complex tool sets for honey extraction among chimpanzees in Loango National Park, Gabon. J Hum Evol 56:560-569. doi:10.1016/j.jhevol.2009.04.001

Gruber T, Muller MN, Strimling P, Wrangham R, Zuberbühler K. 2009. Wild chimpanzees rely on cultural knowledge to solve an experimental honey acquisition task. Curr Biol (in press) doi:10.1016/j.cub.2009.08.060

Sanz CM, Morgan DB. 2009. Flexible and persistent tool-using strategies in honey-gathering by wild chimpanzees. Int J Primatol 30:411-427. doi:10.1007/s10764-009-9350-5

Stanford CB, Gambaneza C, Nkurunungi JB, Goldsmith ML. 2000. Chimpanzees in Bwindi-Impenetrable National Park, Uganda, Use different tools to obtain different types of honey. Primates 41:337-341.

The coming trend in e-books: video.

The most obvious way technology has changed the literary world is with electronic books. Over the past year devices like Amazon’s Kindle and Sony’s Reader have gained in popularity. But the digital editions displayed on these devices remain largely faithful to the traditional idea of a book by using words — and occasional pictures — to tell a story or explain a subject.

The new hybrids add much more. In one of the Simon & Schuster vooks, a fitness and diet title, readers can click on videos that show them how to perform the exercises. A beauty book contains videos that demonstrate how to make homemade skin-care potions.

"Vooks" sounds like there's vampire involvement.

The linked article is about novels, where short videos seem to be included mainly for the imagination-deprived. Textbooks on the other hand seem more promising. How many 1-minute demonstrations, or five-minute interviews would go in a typical textbook chapter? I can imagine casts floating around the page like a "Harry Potter" newspaper.

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IBM and Google want students to ditch their laptops and pick up some big iron:

For the most part, university students have used rather modest computing systems to support their studies. They are learning to collect and manipulate information on personal computers or what are known as clusters, where computer servers are cabled together to form a larger computer. But even these machines fail to churn through enough data to really challenge and train a young mind meant to ponder the mega-scale problems of tomorrow.

“If they imprint on these small systems, that becomes their frame of reference and what they’re always thinking about,” said Jim Spohrer, a director at I.B.M.’s Almaden Research Center.

I love that analogy -- like they're cute little baby ducks learning that their computers are mama.

Meanwhile, this is all about teaching students how to deal with data-mining software. They believe that the future of science is in being able to use these immense datasets, from sources like genomics and high-throughput astronomy.

“It sounds like science fiction, but soon enough, you’ll hand a machine a strand of hair, and a DNA sequence will come out the other side,” said Jimmy Lin, an associate professor at the University of Maryland, during a technology conference held here last week.

The big question is whether the person on the other side of that machine will have the wherewithal to do something interesting with an almost limitless supply of genetic information.

There's some truth to this. On the other hand, I don't see how this explosion of data is going to create a raft of new jobs for scientists. Sure, IBM and Google want to recruit the best, in their position who wouldn't? Maybe we'll need fewer clinicians and techs to prep samples for data analysis, and that will shift some jobs to data analysis. But what they're talking about here are software development jobs to support science, not the science itself.

Yes, geneticists will need to deal with larger datasets, but that means that more instances of small data features will empower them to test certain hypotheses that would have been untestable before. The scientist's job is to think of those hypotheses, work out the logic by which data may refute them, and root the inquiry in existing theory.

There's a practical aspect to this, where working with large datasets helps to train students to think about data and theory. But the tools we're using now to access datasets will be different in four years, and ten years down the line -- the times when today's beginning students will be entering graduate school, or finishing Ph.D.'s Those little ducklings are going to need to swim on their own.

IBM joins the next-gen sequencing race:

The I.B.M. approach is based on what the company describes as a “DNA transistor,” which it hopes will be capable of reading individual nucleotides in a single strand of DNA as it is pulled through an atomic-size hole known as a nanopore. A complete system would consist of two fluid reservoirs separated by a silicon membrane containing an array of up to a million nanopores, making it possible to sequence vast quantities of DNA at once.

Book notes: Free, by Chris Anderson

I read Chris Anderson's book because it was, well, "Free". The book's thesis is simple: Sometimes people profit by giving things away.

I have been, for several years now, making scientific knowledge available for no cost to any readers who care to come by my site. In academic circles, this practice is ordinarily considered to be insane. Therefore, whenever I come across anything explaining why blogging isn't such a stupid idea, I put it right into my files. That's for Luddites on future promotion committees.

How do I review the book without making points like a Slashdot comment thread?

Somewhere in the book, Anderson wrote his plan for making money from Free: Get businesses to pay for the Chris Anderson "Free" seminar. The short business profiles and catchy anecdotes in the book were pretty well crafted as advertisements for the seminar. But beneath the chrome, there are some interesting -- sometimes wacky -- ideas about the nature of human economic interactions.

Keep flax from fire

The paper about the flax fibers found by Eliso Kvavadze and colleagues in Dzudzuana Cave, Republic of Georgia, is a one-pager. The good kind of one-pager -- the kind where you can understand the whole thing. If I didn't hate the misuse of supporting online material so much, I think I might wish that every paper were required to have a one-page synopsis like this. The press accounts about the paper would have been better if they'd just quoted the whole thing!

I find this paper very exciting. Here, in one very clear set of observations, we get a glimpse of a whole human activity pattern. Before this, we knew only hints about fiber processing, later in time and from only one site. Nowadays, most people don't think much about the technology in their T-shirts and jeans. If you're not a fiber artist or knitter, you may not have a concept of just how much work went into clothing and other fiber objects before the Industrial Revolution.

Here, in these little clay samples, is a clear picture of hours upon hours of work. You don't get a variety of color dyes, systematic flax gathering and twisted threads without a sustained tradition. This was technology that contributed directly to survival -- keeping people warm, and helping them fit into their families, clans or tribes. Calories saved by clothing, mats, or padding were calories that did not have to be hunted or gathered. Few technologies could contribute so directly to social status as the kind and quality of clothing. We aren't seeing the beginning of that technology at Dzudzuana, we're seeing it already in a highly developed state.

Flax fibers by themselves would not be newsworthy. Humans gathered plant materials long before 30,000 years ago. Several caves show good evidence of many species of gathered grasses and forbs. We assume that these people, including Neandertals, were using plants as bedding or floor covering materials.

What makes the Dzuzuana fibers different is the evidence that they were incorporated into textiles:

A few of the fibers are colored and appear to have been dyed. A wide range of natural pigments was available to the Upper Paleolithic occupants of the cave, including roots and other plant parts (5). The color range includes yellow, red, blue, violet, black, brown, green, and khaki.

It's like Old Navy! More:

All 27 clay samples from unit D produced fibers of flax (N = 488) (table S2); some were spun (N = 13) and dyed (N = 58), the colors are mostly black-to-gray and turquoise. One of the threads is twisted. The complete fibers are long (>200-m) and composed of segments of smaller lengths. Individual fibers are linear with thin and translucent walls. Several ends of both complete and disbanded fibers were cut across (Fig. 1, 1 to 7).

On the whole, it's very convincing evidence of fabrics. Michael Balter's accompanying news piece was able to dig up some doubters about the extent of dyeing, and maybe a more careful study of the chemical pigments will be possible.

The paper also includes a hint about other fiber processing at the site:

The combination of flax fibers, some tur hair, and microremains of skin beetles (fig. S2) and moth can be interpreted as an evidence for processing of fur, skin, and cloth. This conclusion is supported by the presence of spores of the Chaetomium fungus (fig. S2), usually growing on clothes and other textiles and unfortunately destroying them (6).

How early does it go? Is this a novel invention with the Upper Paleolithic, as has often been suggested of string, nets, and other fiber creations? Were fabrics utilized outside the northern latitudes earlier in time?

Possibly, the fungal evidence might be found at even earlier sites, maybe even by using metagenomic techniques. It's reasonable to think that Neandertals and other early people made extensive use of skin and hair. Woven or knotted fabric is different, but possibly there is a continuum between natural animal fibers and plant fibers that connects them.

References:

Balter M. 2009. Clothes make the (hu)man. Science 325:1329. doi:10.1126/science.325_1329a

Kvavadze E, Bar-Yosef O, Belfer-Cohen A, Boaretto E, Jakeli N, Matskevich Z, Meshviliani T. 2009. 30,000-year-old wild flax fibers. Science 325:1359. doi:10.1126/science.1175404

Billable hours for professors

Yesterday's post on MIT OpenCourseware touched on some of the difficulties of independent study using online tools. Three barriers stand in the way -- one practical, two structural.

On the practical side, it's hard to get help without paying for it. If you understand the materials well, you ought to learn as easily from them as any undergraduate taking the class on campus. But if you hit a snag, you might be stuck a long time trying to work through it yourself. That's what professors, teaching assistants and tutors are for: getting you around the snag, so that you can keep progressing.

On the structural side, colleges use every means at their disposal to defend their role as credentialing institutions. Getting a degree -- a certification -- means paying somebody. And one tool in their arsenal is copyright -- they may give you their lectures and notes for free, but they can't distribute the textbooks, graphics, or images that have been drawn from other sources. Sad but true -- I show photos of fossils and sites routinely in my classes, as well as graphics from published articles. Those don't go into free online content -- hence again, personal is better.

Kevin Carey writes in Washington Monthly, "College for $99 a Month", focusing on a new player in the transfer-credit business, StraighterLine. It's one of several outfits trying to make a business out of online education. The article's title draws attention to the unique pricing scheme -- for 99 dollars a month, you can take as many courses as you want. It's like Netflix for college classes:

In recent years, Americans have grown accustomed to living amid the smoking wreckage of various once-proud industries—automakers bankrupt, brand-name Wall Street banks in ruins, newspapers dying by the dozen. It’s tempting in such circumstances to take comfort in the seeming permanency of our colleges and universities, in the notion that our world-beating higher education system will reliably produce research and knowledge workers for decades to come. But this is an illusion. Colleges are caught in the same kind of debt-fueled price spiral that just blew up the real estate market. They’re also in the information business in a time when technology is driving down the cost of selling information to record, destabilizing lows.

The company (and others) makes a business out of low-cost information by offering low-cost services. The parent company, Smarthinking, offers 24-hour tutoring by Internet whiteboard along with purely online tutorials developed in partnership with universities and textbook publishers. Some universities have outsourced their on-campus tutoring to the company, I suppose trading better service for work-study dollars.

Carey's article covers some of the challenges facing StraighterLine -- I was interested in the part describing how Fort Hays State University (in Western Kansas) had evaluated some of the company's courses as transfer credits, only to invoke the ire of the North Central accreditation board and professors. It illustrates the guild system that protects the universities' credentialing market, for the time being.

The underlying issue for colleges is that upper-level specialized courses are money-losers. They take up a large fraction of expensive faculty teaching time, but they have low enrollments -- making them better for students. Colleges cover these costs in part by offering big lecture classes to underclassmen. If students could take 10 of these classes in four months with StraighterLine, they'd spend $400, compared to the many thousands that the same credits would run on campus.

Bob Cringely's current column ("Burn baby, burn") touches on the same problem:

Education, which — along with health care — seems to exist in an alternate economic universe, ought to be subject to the same economic realities as anything else.  We should have a marketplace for insight.  Take a variety of experts (both professors and lay specialists) and make them available over the Internet by video conference.  Each expert charges by the minute with those charges adjusting over time until a real market value is reached.  The whole setup would run like iTunes and sessions would be recorded for later review.

Remember, all lectures are also available online for free. What costs is the personal touch.

Say a particularly good professor wants to make $200,000 per year by working no more than 20 hours per week or about 1000 hours per year.  That gives them a billing rate of $200 per hour.

That's an interesting business model -- make every professor into a paid consultant. Many already make substantial income in that way, particularly those verging into industry-dominated fields like engineering and medicine. But it's hard to see many English or history professors making $200 per billable hour. Cringely points out that the deal would substantially improve the deal for students:

Now look back at your university career.  How much one-on-one time did you actually get with the professors who really influenced your life?  I did the calculation and came up with about two hours per week, max.  Imagine a four-year undergraduate career running 30 weeks per year — 120 total weeks of school — times two hours of insight per week for a total of 240 hours.  At $200 per hour the cost comes to $48,000 or $12,000 per year.

That’s a huge savings compared to the $200,000+ an MIT-level education would cost today.

The difference in cost is facilities and administration. Some of those facilities are necessary for an MIT-level education -- lab work can't all be virtual.

But, there are a lot of ways to involve undergraduates in research, and $200 an hour for direct tutoring in research methods plus subsidizing publication in the university-run open access journal -- that might well be a better (and more practical) advanced education than a faculty-led seminar. It's like music lessons, except for science.

Or students could pool their money to have the professor attend their seminar weekly -- get enough people together who want a Milton seminar, and then hire the Milton scholar. Or two, on alternate weeks. Take what was once passive and make it active.

Well, there are some perspectives on the future of education. Who knows how they'll turn out?

Clearly I need hominid casts made of stainless steel:

Shapeways, a company that made its name offering custom 3-D printing in plastic and resin, will now print your designs in stainless steel. All you have to do is upload your brilliant CAD design (or pick from a range of stock items). Shapeways will print it out in cold, shiny steel, and mail it to you.

It ain't cheap -- $10 per cubic centimeter. But I suppose they're dishwasher safe.

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Errrgh...I'm beginning to think that there are around five out of print books that I would gladly spring for a Kindle if they were available, because each one used is 80 to 100 bucks. Trouble is, it seems like a lot of professional texts that are on Kindle cost $50 or more.

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