Monday, October 15, 2012

Mono lake flies

 Does anyone remember these ads in the back of Archies comics? I do. Those ads were full of unattainable, fascinating stuff . And I always wondered just what creatures these sea-monkeys were. Even to young kid me, papa monkey and mama monkey sounded a bit unlikely. Yet like a pet I could actually keep in our tiny Bombay house. Equivalent to the caterpillars I kept that became pupae and always ecclosed to butterflies when I was at school.

The first time I saw a sea monkey, ultimately was earlier this year in Mono lake. What they are these things, brine shrimp. And Mono has plenty of them. They feed on microscopic plankton which is so plentiful, it turns the lake green.  Another plentiful creature in the Mono lake ecology is the alakine fly, which also feeds on plankton. All of this plenty at the small size scale, converts to high productivity at the higher size scale and millions of water birds visit the lake. We saw the fag-end of the migration. But we did get to see all the little stuff and the big stuff chasing it, successfully or not.

The cool thing about the flies is that they carpet the shore and when you disturb them, the disturbance travels through the carpet and you get these waves of flies, flying off and landing again behind you. Imagine being the exact opposite of magnetic as you walk through nail filings.

C is usually not that repellant to insects.

It take little to set the flies off and even dainty bird steps will do it.
But there really are a lot of the little blighters. Its a blizzard in fact.
This gave some birds some bright ideas. This California gull thought it was enough to simply run through the swarm with his mouth open. The worst thing is, I suspect it worked. Natural selection isn't what it used to be.
Or at least that's what these guys seem to be thinking
 While we didn't get to see the mass congregations of a few million birds, it's not hard to imagine them there. I suppose I could do worse than go back some day to catch that moment. And perhaps a few more gulls having an easy meal.

Copyright © Natasha Mhatre If you're reading this without attribution to me anywhere other than at my blog Talking Pictures, its probably being plagiarized.

Mono lake, Lee Vining, California

The best thing about Mono lake is not that is surrounded by the Sierra's. It is not that it is utterly gorgeous. And not that its a salty terminal lake with spectacular tufa formations. Or with a salt content rivalled only by th dead sea. It is it's ecology. (Next installment)




Copyright © Natasha Mhatre If you're reading this without attribution to me anywhere other than at my blog Talking Pictures, its probably being plagiarized.

Monday, October 01, 2012

Distance


Copyright © Natasha Mhatre If you're reading this without attribution to me anywhere other than at my blog Talking Pictures, its probably being plagiarized.

Saturday, September 22, 2012

Foraging and Sleeping



 


Copyright © Natasha Mhatre If you're reading this without attribution to me anywhere other than at my blog Talking Pictures, its probably being plagiarized.

Wednesday, September 19, 2012

Squiggles

PS: How cool, you cannot make these up! Just today a day after I posted this, I got an email that this book which uses one of my older squirrel images is now out in print! PPS: I get nothing out of this, it's not an ad, just a squiggly coincidence!

Chipmunk: but which one?
 
California ground squirrel

Western grey squirrel

Greased lightening: Golden mantled ground squirrel

Yellow bellied marmot
 I travel, you get a beast list.

Copyright © Natasha Mhatre If you're reading this without attribution to me anywhere other than at my blog Talking Pictures, its probably being plagiarized.

Tuesday, September 11, 2012

At the zoo: San Diego











 


Copyright © Natasha Mhatre If you're reading this without attribution to me anywhere other than at my blog Talking Pictures, its probably being plagiarized.

Sunday, September 09, 2012

Half Dome and San Francisco

Half Dome from Olmstead point




San Francisco from Union Square


Copyright © Natasha Mhatre If you're reading this without attribution to me anywhere other than at my blog Talking Pictures, its probably being plagiarized.

Monday, September 03, 2012

Sleeping on the shore


Copyright © Natasha Mhatre 2012 If you're reading this without attribution to me anywhere other than at my blog Talking Pictures, its probably being plagiarized.

Monday, July 02, 2012

Skylarks

There's a grassland on a hill on the border of this city. It's a golf course really, but it doesn't matter to the skylarks that decide to breed there. To hear them singing as they make these beautiful aerial displays is a thing of beauty. The RSPB website has a snippet of song to tempt you with.

Some of them seem to have brood already. This pair seemed to be bringing food to a nest. But some still made displays, possibly the unlucky ones.


Copyright © Natasha Mhatre If you're reading this without attribution to me anywhere other than at my blog Talking Pictures, its probably being plagiarized.

Friday, May 04, 2012

Word beasts: tree crickets break the rules, sort of.


This time its my own work. We just published a paper that I think is important for a couple of reasons. I'll outline the main one here. I've not gone into this detail in any of the popular science articles I've interviewed for, simply because this is a subtle point. (And also because it got lost in trying to explain the work, I'm not practiced at this interviewing thing). But this is my blog, so I can tell you and take the long route, consider this your fair warning! This is not an explanation of the paper, but of why its interesting.

There are very few laws in biology. By laws I mean rules that hold far and wide across a huge phylogenetic range of organisms. Biology is about variation, making oneself distinct, occupying a new niche. So, in the complicated messy world of biology,  it's quite rare and hence, comforting to have a 'law'. Often when such laws exist, they are rooted in physics. For instance, the law that relates thermoregulation capacity to body mass. Since larger animals have a lower surface to volume ratio, they retain heat well and lose it poorly. And vice versa for small animals, loose heat easily and retain it with difficulty. As you can see, this law is very rooted in the physicality of the body. You may even say it is rooted at an even more fundamental level, in geometry itself.

The law that relates to our paper is quite similar. In animals that communicate using sound, the dominant frequency of the sound they produce is correlated to their body size. Neville Fletcher, who has written text-books in the field of acoustics and bioacoustics, calls it a rule that holds from insects to elephants. And he is right; it does, by and large. There are simple physical reasons for this behaviour. They relate mainly to the efficiency of sound production at frequencies appropriate to the organisms size and to the mechanisms of sound production. For instance, insects use resonators as an important element in their sound production mechanism. A large resonator, therefore, leads pretty much deterministically to a lower frequency.

Now, many bioacousticians take this a step further and suggest that size relates to frequency not just across species but also within species. This is not really a large logical step. The reasons why this relationship would hold are the same as for the across species relationship.

The next step that researchers in the field have argued for is somewhat more problematic. They assume (and also test, sometimes) that because this relationship exists, information about size exists and can be percieved in the sounds an animal makes. There is some tentative evidence and a strong belief that size is important to mate choice and choosy females prefer larger males who are somehow 'better' in evolutionary terms. Taking the step, however, it turns out is more complicated; there are a few assumptions that have to hold to make this 'information transfer' and consequent 'choice' possible.

The first assumption is about reciever psychology. There is a presumption that a reciever can make frequency discriminations that are as fine as the spectrum analysis techniques used to study the sounds in the first place. If the change in size associated change in frequency within a species is smaller than the frequency resolution of the listening party, the question of telling the size of a caller is moot.

The second assumption, which we are concerned with, relates to the next level of variation, the within individual variation. The first level of variation is across species, then within species and finally within individual variation. If within individual variation in frequency is higher than within species variation, then information about size is obliterated and no meaningful 'choice' is possible.

 Here's where the crickets come in. The way crickets sing is quite special. Not only do they use resonance to produce song, they also use the resonance to tightly control the song frequency using something called an escapement mechanism*. The idea runs: therefore, within individual variation will always be lower than within species variation and the information must exist in the song. And not just for crickets; this relation is often thought to hold for insects in general since many of them use resonance as a sound production mechanism.

Not so, say the tree crickets, whose frequency changes with ambient temperature. As a direct result of this property, an individual tree cricket's frequency variation is as large as that of the whole species and the train of logic crumbles because an assumption is not met. Remember the law has not been violated, not strictly, the range of frequencies each individual insect will produce will still depend on his size. But since he can call from anywhere within that range, you can't figure out his size from hearing him at any given time. The information that falls out of the 'law' is gone.

We found that these insects, tree crickets, use resonance for song production as well, and have the same singing mechanisms as other crickets. But these mechanisms fail to control song frequency. So we asked, well, how do they do it? What does it take to break this link down and remove 'information' about body size from song frequency? How hard a transition is this? It turns out, its really simple. All you have to do is sing with longer wings. No fancy non-linear mechanics, no stochasticity in the relation between body size and resonator size, no super temperature sensitive materials, nothing special. Just longer wings. Geometry trumps everything.

And that is why its an interesting result. It doesn't take a lot to break down a train of logic which everyone thought derived from a profound biological 'law'. It takes a relatively small change in geometry to undo a laws effect. That is how easy it is to tweak biological systems. And that ease is one of the sources of the huge diversity you see out there.

Paper: Mhatre, Montealegre-Z, Balakrishnan, Robert (2012) Changing resonator geometry to boost sound power decouples size and song frequency in a small insect. PNAS http://dx.doi.org/10.1073/pnas.1200192109 

*  Its the same mechanism that clocks use to keep time. There's a starter image to explain it on this page if you want to know more.

Wednesday, April 11, 2012

Poetry and Utamaro woodcuts

I've been writing a story about a Japanese soldier in Guam, and while doing some research I stumbled on these beautiful books. Some of the beauty of the poetry will obviously escape non-Japanese speakers like me. But the detailed nature of the drawings will not. I thought some of you would really enjoy them. Do have a look!

http://www.fitzmuseum.cam.ac.uk/gallery/utamaro/

Sunday, March 04, 2012

Word beast bats: Or this one?


Gotta love how I think I can do my editing online!

Saturday, February 25, 2012

Word beasts: an arms race

 

About 65 million years ago, is the accepted estimate for when bat echolocation first appeared on the scene. This was the beginning of a long and protracted arms race between the bat hunters, and the hunted, the insects. For a bat, the nocturnal insects of choice are the moths. Plentiful, and with large fat bodies which make them quite attractive. It helps that they are also easy to find; their wings are great reflectors of the ultrasonic frequencies that bats use to find them, flagging them up against the clutter in a bats sonic world.

Way back in evolutionary time, the moths responded to their new predators. In the beginning simply, by evading the bat attacks with crazy evasive diving maneuvers. Then, with more sophisticated methods; ears that were tuned with great precision and sensitivity to the bats very high pitched cries. The very echolocation cries that the bats used to find moths now immediately alerted their prospective prey to their presence.The moths could now dive and circle away well in advance of the swooping bat.

In response, the bats called more softly, they started whispering, and changing the pitch signatures of their calls. They tried their very best to make echolocation calls that the moths could not easily detect or discriminate the direction of. The moths kept up their part of the race too, the pressure not to become supper being quite high. They changed the shape of their wings so their main body would not be attacked and just the edges of their wings would be taken. Some even started making sounds of their own! Sounds that either jammed bat sonar or made them sound unappetising, the acoustic equivalent of very red berries. And in return, its seems that some bats have responded by finding prey by the sounds of the prey alone and silencing their echolocation calls. And so, on it goes. 

And on goes the research, starting with the work of Brock Fenton, way back in the late 70's, right up to today with many different groups still working on different aspects of the same behaviour and ecology! Including the work of fellow post-doc Holger Goerlitz, who helped me do this beast. If you want to know still more about this cool co-evolutionary arms race, you could do worse than read this lovely review (if you can get behind the paywall).

Copyright © Natasha Mhatre If you're reading this without attribution to me anywhere other than at my blog Talking Pictures, its probably being plagiarized.

Sunday, February 19, 2012

Word beasts: Bat and moth coevolution teaser

Thursday, February 02, 2012

Running interference


I'm on the familiar shore of a familiar sea just now. But I miss my river. The sullen muddy river with its tides and drowned shopping trolleys and bikes. It doesn't freeze, but the harbour does. Then the graceful and scornful swans waddle on frozen bits of water which cave under their weight. But its by the rivers banks that the cormorants swallow eels and the apples grow and I run, sometimes.

I missed the sea once, and still do but not this sea. Some mythical sea, where there is only the sound of the sea but none of traffic or people. Some mythical seashore on which there is a little girl who still waits for the gulls that are rare and come only in the winters.

Copyright © Natasha Mhatre If you're reading this without attribution to me anywhere other than at my blog Talking Pictures, its probably being plagiarized.

Monday, January 23, 2012

A leg up

I occasionally get emails I really don't believe I ought to deserve. Sometimes I refuse the offer made, there were a few advertising offers and a few requests for reviews. I don't really have the visitor stats on the blog that make me feel that I can honorably accept that sort of offer. But occasionally a photographer writes in, asking for a mention. I don't really know what to do then. I'll decide on a case by case basis, but everyone can use a leg up, no matter how small...So here's my small nod to Gabriele Basilico, because he was nice.

(c) Gabriele Basilico


Gabriele's a young Italian photographer from Saronno, who likes to shoot film, even in the age of digital photography. With a Rolliflex. Brave man! He says he enjoys the process of visualisation and the challenge of waiting to see what you imagined emerge in a darkroom. And he has a couple/few of photographs up for auction for the first time! Which is cool and exciting for someone starting out....

Tuesday, November 15, 2011

Word beasts: a parliament of two

You might remember a moment when in you were choosing what you were going to do with your life in which it all came together or you may not. This may be the mythology of me that I've built myself but one of my markers was reading about the Jeffress' model in Eric Kandel's book, 'Principles of Neuroscience'. I remember thinking, that's cool, if I could do stuff like that I would love it. Somewhere there is the beginning of my love affair with modelling biological systems.

The Jeffress' model is a model of a neural circuit built to detect the direction that a sound is coming from. It's a beautiful and elegant model that has been found to be used by the brains of many different species, including humans. One of the most elegant bodies of work in neuro-ethology showed that this model holds for barn owls and explore many of the nuances of the behaviour.

The work of many people mainly Knudsen and Konishi and Catherine Carr showed that not only is the Jeffress model used to compute the azimuth but it also is used at several frequencies after a sound has been decomposed into different frequency components. This solves the problem of degenerate solutions that you could get from a pure tone sound. Apart from this, in perhaps one of the most 'awww' experiments ever, they showed that the auditory map is tuned to the visual map and this can be tuned and retuned but only when owls are young. It's beautiful work and this piece is in based on it. Imagine trying to sneak up on these owls as they were hunting and imagine that they found you instantly as you rustled through the teasels. They would find you with an accuracy of a single degree!

Edit 1

Tuesday, November 08, 2011

As many as tell the tale

The Indian right does it again. They dropped A K Ramanujan's essay in their quest for a perfect world with one sangha line way of looking at it.  So I thought I'd link to it. And revive this tale that's apropos.

Repost


As many as tell the tale

There was always the attention, the eyes that turned towards us throughout the entire journey and the steady stream of questions. We had tired of telling our stories, spending so much of our life like small change on insistent little children who came running up to us, asking, unbridled yet by convention. Our story was now becoming mere words. Every time I told it, reality seemed to erode a bit. It became my construction and not something that had really happened. It was to end soon; it was our last bus ride home.

I sat facing the window; my body sunk into his shoulder, with his arm around me. As I hunkered down for the long dusty ride, I realized that I had wondered whether we would even make it this far, but we had. He had gamely borne the sun, the scrutiny and enjoyed himself nonetheless. As the bus pulled out of the station and into the stone cobbled lanes of an ancient kingdom I said, “Tell me a story.” He nuzzled my hair and asked, “What kind?” “Old stories, tell me really old stories, they seem appropriate somehow. Tell me what the world is made of, tell me how it was made.”

It never took him long to come up with stories. We had lived worlds apart and our stories were different, we could rely on our old familiars being new to the other. “You remember that beautiful tree in the courtyard?” “Umm hmm, the Frangipani tree.” “It made me think of the Yggdrassil.” “What is that?”, I asked. He mocked something I’d said oftentimes before “You haven’t heard of it?” “I have”, I said smiling and then in my worst pedagogic voice, “but you have to tell me all about it. That’s how you tell stories.”

“Alright, my little Besserwisser”, he said indulgently. “So I’ll tell you how the world is made according to the Icelanders. There are these old, old Norse poems from about the 13th century I think, in these old books called the Eddas. Pretty much all of Norse mythology comes from them. They say that at the centre of the universe, standing in nothingness, there is a massive ash tree, which is the tree of the world, the Yggdrassil. It shelters and links all the nine worlds together. It is the source of all living souls in all the worlds. One of its roots is in the upper world of Asgard, where the gods live, another in Jotunheim in the Midgard, the middle worlds and the last in Niflheim in the Helheim, the nether-worlds, the realms of death. Under the Asgard roots, the Gods assemble everyday to decide on the affairs of the world, the Midgard root dips into Mimir’s well of wisdom and in Niflheim the tree is constantly chewed on by a snake called Niddhog, the eater of corpses, who continuously tries to destroy the Yggdrassil. Life and death and learning are all organised around this tree. But when Ragnarok comes, everything will be destroyed. Niddhog will be destroyed and so will the mighty gods and all the middle worlds and their puny inhabitants, only the Yggdrasil will remain. And from the tree, life will begin again.”

I pouted and teased him, “There they go, your stories, killing my snakes, making villains of them! Eating the tree of life! That’s even worse than the biblical story, which only makes them responsible for the fall of mankind. Only the mere and meager tempters of essentially flawed and weak humans. This is grander evil. Poor buggers, no one loves them at all.”

"Oh yes, little one, pick on that tiny bit of the story!" But then, smoothing down my mock ruffled feathers, he said, "To be honest though, there are positive snakes in all mythologies. For instance, the Ouroboros, the snake grabbing its tail is the gnostic symbol of eternal return, renewal, of the very soul of the world. Plato even called the Ouroboros the perfectly constructed animal because it had no need for anything other than itself and had nothing that was superfluous."

"Hmm, ok, so maybe they don't all make them bad. The renewal and return are quite positive and it also makes me think of Sheshnag. So, Sheshnag is the massive snake upon whose coils Vishnu, the preserving god of the Hindu trinity rests. He is Vishnu's constant companion, born with him on the earth in every one of Vishnu's ten incarnations, the dash avatars, which by the way is where the word comes from." Realising I made constant unnecessary diversions, I impatiently added, "Anyway, more to the point, the word 'Shesha' means what remains. And like the Yggdrassil, when the Universe is destroyed, all that will remain will be the serpent. He is the only truly eternal being, which is where his other name Ananta or the eternal comes from. In the Norse myth, the snake eats the eternal and in the Hindu one, it is the eternal and the Ouroboros is a symbol of eternity. Funny that snakes are so often linked to the forever."

Doubt still niggling away at me, I added "But there's loads of different Ouroboros aren't there? I mean mythic snakes that eat their own tails? And also the Christians don't take such a kindly view of the symbol, they don't see it as a eternity symbol, but one of being trapped in a limited material world."

"Well, the Christians always hated what they saw as pagan beliefs, they just found a way of twisting them into something ugly so people wouldn’t use them anymore. They were also just a bit more scared of fertility symbols, I think. But, off course, there are others, I think Quetzlcoatl is sometimes depicted as an Ouroboros; then there's Jorgmungandr, Loki's son, the world serpent who catches his tail while encircling the world. I can even think a non-mythological one and I bet you can't guess it", he said his eyes twinkling.

I squeezed my eyes tight against the distracting confusion of images that was tumbling through the TV screen of my window and tried to dig other images up. I gave up eventually and said "I'm going to kick myself for not trying harder, amn't I? Alright I'll bite, tell me."

“Aren't you clever?” He quipped while his fingers traced the contours of my ears as he half whispered, “Kekule’s benzene rings!” and waited for my protests.

I laughed rather than protest and said slyly, “And that’s a real story, isn’t it, unlike Newton’s apple apocrypha? Kekule talked about it himself.”

“Umm hmm, Yes he did. But I think some people think he might have confabulated. So it might not be a true story after all.”

“Such a pretty way of saying he lied! But yes, there were loads of different stories that floated around; different stories that he told different people. So it's thought he might have made all of them up. I wonder though, if a story is a true story as long as it is good, veracity be damned. Well, it certainly gets repeated more, and doesn’t what is called enough get called into existence?

Anyway, snakes of sciency legends, huh? Well, the staff of Asclepius has a snake wound around it, doesn’t it? That’s sciency, the symbol for medicine; it sometimes gets botched a bit, has two snakes instead of one, sometimes it’s done right too. The Greeks used to try and cure people of different ills by letting snakes crawl all over them in some of their temples. That’s believed to be the origin of the snakes on the caduceus. I wonder what kind of magic that is, cause it wouldn’t be Frazer's idea of sympathetic magic, would it? Seeing how snakes are associated with venom and all that.”

“Like I keep saying, it depends how you see it. In the epic of Gilgamesh, Gilgamesh at the end of his long and arduous travels, gets this plant from the bottom of the ocean. The plant was supposed to grant him eternal life but a snake eats it while he is sleeping and it becomes immortal instead of Gilgamesh. And that’s why snakes moult, as a symbol of being reborn again and again. So maybe it is sympathetic magic after all, the patients want a bit of that eternal life to rub off on them. I guess that's another bit of the forever that sticks to snakes.

And, the caduceus, there's also another story for it. Asclepius is supposed to have learnt the secret of immortality while he lay dying, by seeing one snake heal another using a plant. He used the same plant and revived himself. It might be this snake on Asclepius’ staff. Asclepius, by the way, was killed by Zeus for having acquired the secret knowledge of immortality. Zeus feared that all humans might become immortal if Asclepius told them about the plant and so he killed him. Some more snakes with forbidden knowledge. But not evil in this case, I guess, not temptors."

We must have gone quiet for a while at this point, because I remember looking up from the window and noticing the expectant faces around us. A half-lit, insulated tube, full of human faces, hurtling through a fading day in the Indian summer. I imagined for a moment that they were listening to our stories. But perhaps they were merely waiting for us to do something unusual. Or even were just surprised with our freeness with each other. They watched and I was amused and the bus carried on, on its dusty, windy way.

“With both her hands she labors at the knots.” He broke my reverie, and asked me, “What were you thinking of little one?” I sighed a little at having been woken up. It was starting to turn dark outside, the sky turning that beautiful inky blue, against which the tungsten lamp-lit streets and faces are so vivid and beautiful. “I was thinking of the sin of making everything human and how it is impossible to tell a story that at its core does not deal with our concerns. They are all stories of rebirth so we may live forever, fertility so we may be productive, so on and on.” “Well, that is true, I guess till snakes tell stories of themselves, there will be no truly snake stories. There will only be reflections of humans in snake skin. But there must be something, a story out there somewhere that is at least told in the voice of a snake. There’s just too many stories for there not to be one.”

Even the last light was now gone, I turned around and faced him, leaning against the window now. Happy to watch his face, exhausted as it was, but unhappy at not being attached to his hip as I had been for so many days now. We were drifting apart just then, exhausted by the traveling and the intensity of it all. The connection had to be reformed; that narrative had to be found again somehow.

“Well I suppose there is one, there is at least one story told by a snake. Krishna, one of Vishnu’s human avatars, performed many miracles when he still just a child, things that amazed even his parents who knew of his divinity, demonstrating he was no mere god. One of them was the taming of Kaliya, a terrible snake that lived in a lake near Krishna’s home. Kaliya was the bane of Krishna's people. He made a precious resource completely unusable. He spewed his venom into the water of the lake and made it undrinkable and no one could swim or bathe in the lake for fear of dying by his bite or the bite of his many wives and children.” “Evil, evil snake…” “That’s the general idea. But Krishna was not afraid of Kaliya and went to the lake and splashed around in it and sure enough Kaliya came along and attacked the little boy. Krishna was not going to be initimidated by some mere reptile and he jumped on top of Kaliya’s many hooded head while evading all his attacks and danced and danced on it. He danced on it till the snake was exhausted and completely subdued. And then he danced some more, he danced and danced until the snake vomited blood and was near death, he danced till Kaliya’s wives begged him for their husband’s life. And then he stopped.”

“So where’s the snake’s story?” “Patience, it isn’t done yet. When Krishna decided to spare Kaliya’s life, Kaliya was very grateful and thanked him profusely and offered Krishna his best hospitality. Krishna was pleased and told him he could continue living in the lake with his family if he pleased, as long as he harmed no one and did not pollute the waters. Then he went to Kaliya’s home with him at the bottom of the lake and lived with his family for a while, enjoying their hospitality, sporting with their maidens as he had done with those in his village. Krishna was a massive flirt, eventually married some ridiculously large number of women, some sixteen thousand of them. Anyway, one of Kaliya’s daughters told him the story of how they came to be at the bottom of that lake and how they became snakes.

She said that her father was a rich merchant who had lived on the banks of the Yamuna, a long long time ago. He had been very prosperous and had made a great deal of money. They had everything they could ask for and never needed to work to increase their riches. The whole family had grown accustomed to a life of profligacy and sloth. They would eat and drink and lie about and do not a thing for days on end. Their servants would carry them everywhere, to their baths and beds each day and even feed them like infants.

One day, they were all lying about in their front room after a huge lunch when a rishi, a sage with great powers, came to their door asking for alms. The servants had only just retired to their meal and no one in the family even stirred at his presence. He had to wait a long time to even be asked into the house. And when he came they did not think to ask his forgiveness, in their indolence they would not even offer him food or a drink of water. No one rose to wash his feet as is customary to do. Enraged at their sloth, he cursed them, he said these arms and legs you no longer use will fall off and you will crawl on your bellies everywhere. You will become ugly to the eye. You will be reviled by everyone around you, as you shun your duties to me, so shall everyone shun you. He cursed them that they would poison everything they touched and people will hate and fear them greatly. And before their very eyes, they all lost their arms and legs and became scaly and slippery and had to crawl on their bellies to get anywhere; in short they became the first ever snakes. The servants around them seemed terrified at the very sight of them and threw things at them attempting to kill them.

Swiftly, for once, gliding between the blows from the servants the family asked for the forgiveness of the rishi. After much pleading and groveling the rishi finally relented. He told them that they must go and live in the lake they now lived in. They would be reviled and feared and no one would come near them. But one day in the future the lord of the universe would come to them as a child and would fight the merchant who had become the biggest ugliest and most fearsome snake of all, Kaliya. Kaliya must fight the lord with all his might and he will come near death in this fight and in this fight he will be purified by the touch of the feet of the lord. And then if his wives succeed in begging for his life, they would be able to live peacefully from then on. They would remain snakes as they were now, but at least they would not poison the world and would not be hated by all. The snake girl told Krishna that they waited for many many eons for his arrival and were much relieved by his blessings. There that is the snake's story.”

Exhausted at the effort, I put my head on his shoulder and closed my eyes. As I started to drift away, I realized he was restless. I don’t know what tipped him off, whether it was the skeptical looks that I imagined our fellow passenger’s faces wore or whether it was that I had told him of the primordial snake before. He said to me as he wound his comforting arm around me again, “That’s a nice story, love, very evolutionary, but I think you might have taken a few liberties. Haven’t you? That isn’t a real version of that story.” I smiled through sleepy eyes, as the bus conductor turned off the lights to let us all sleep for the night leg of the journey, I said “There are, my love, as many as tell the tale.”
.................................................

PS. Do tell me if you like the stories. Or if you hate them and especially if you think they are so bad I should stop all together. Or best of all, if you know how I can make them better!
N

Orlando
In another skin

Tuesday, November 01, 2011

Word beasts: teaser

Care to guess?

Saturday, October 01, 2011

Word beasts: Language baby

language baby small

The study of human language is surprisingly contentious. There are two camps, the words and rules camp and the connectionist camp. (There are perhaps more, but as I understand it, these are the two serious contenders.) The words and rules camp begins with Noam Chomsky's work on language in which he proposes the idea of generative grammar. There are many nuances and subtleties to it, that I don't even begin to understand. But I'll try to explain it as best I understand and remember it.

The rough words and rules idea (sensu Pinker which is an extension of Chomskian theory) is that the a baby's brain is not a blank slate (tabula rasa) when it comes to the syntax of language. What children are programmed to do as the learn language, is to treat what they hear in structured ways. During the acquisition of language stage they both abstract rules from what they hear and learn the meaning of the words. There are two types of memory that get engaged in this: procdeural memory, the procedure of transforming words to be used in a sentence and lexical memory, which learns the semantic meaning of the words.

The other ideas are called connectionist or emergentist or structural. (I'm less familiar with them, so forgive me if I give them a bit of the short shrift.) They suggest that children's brains simply make statistical models of language to allow them to learn it. They don't abstract rules but learn the statistical regularrities in language. These approaches are often accompanied by neural network models which they then train with a lot of text and see what language they are capable of producing. I personally find them a bit unsatisfying, but they keep the debates over language fresh and engaging.

Over the years much arguement and fighting has ensued. In one of his moments, when Chomsky was ridiculing the probabilistic model of language, he coined the phrase, 'Colourless green ideas sleep furiously'. Its a phrase that could come out a statistical or purely structural model, its syntax is perfect and yet it means nothing.

The language baby word beast (and we are beasts even if we would like to seperate ourselves, often on the basis of language itself) is made of that phrase in as many languages are the wordle site can encode. The baby is based on one of my favourite drawings, a fetus seen from a truly unusual angle by a master of many things, not least art and science. The baby is an oblique look at all the arguement that is dormant within our capacity for language.

Hat tip, to Daniel Robert who formed the nucleus of this word beast idea.