Saturday, May 3, 2014

A baby's brain

May 3, 1999, will be forever engraved in our memories. Today Magali and I become parents. As you read these lines, I am pacing back and forth at the hospital, waiting for Dr. Escobedo to deliver, by Cesarean section, our daughter Ana Isabel.
       Ultrasound imaging has made big strides. We learned the baby is a girl in February. We even have a vague idea of what she looks like: she has a rather largish nose like her mom and a pouting mouth like her dad. But ultrasound scanning can tell us nothing beyond her looks and physical health. The structure and potentialities of her brain must remain hidden for some time.
       A baby’s brain is not a clean slate. In the ages-long debate about whether the development of the mind is influenced primarily by nature (what the brain is equipped with at birth) or by nurture (education, experience) I resolutely side with both camps. But don’t give my words more merit than they deserve. I speak only as someone who has done a great deal of introspection and analysis of his own mental process. Here, for what they’re worth, are my observations. Please bear in mind that I may be dead wrong.
       It is my belief, then, that we are not born with a blank cassette in our heads. At the time of birth the brain must already have a fuzzy structure, a vague idea of what it wants to be. I picture the neural network of a newborn as a misty hillside with many paths, all half-hidden in the brush. Each path proposes --but does not impose-- a natural direction. There is a limited number of paths. You can’t just go anywhere you like, or not without toil. Going against the nature of your brain is like leaving the well trodden road and marching off into the woods --it can be done, but it takes considerably more effort. And some directions are strictly forbidden.
       I find some tasks are easier for me to perform than others. One or two of these I have always pulled off with neither difficulty nor special training. Those would be my natural talents. I confess to having only two --a flair for music and a way with words. That’s all. Other things --playing cards, cooking, making decisions-- are uphill climbing to me. Still others --playing dominoes, sports with rules, politics-- are utterly beyond my reach. I have discovered that if the brain can be viewed as a pigeon-holing and cross-referencing machine, mine pigeon-holes better than it cross-references. I have better memory than judgement.
       Like water flowing down a hill, your thoughts run more readily down existing pathways and gullies. Paths in the forest are made wider by frequent treading. Neural connections are reinforced by frequent use. But new trails may also be blazed with effort, hacking at the bushes. That’s where nurture comes in. Offer kids as many opportunities as possible for blazing new trails in their brains, especially while they are very young. Later in life the brush thickens. Existing pathways may remain (don’t depend on it, keep hacking!), but opening up new ones will be increasingly difficult.
       In the years to come we will try to foster in Ana the things we value, taking pains, however, not to make a clone out of her. Her mind is, well, hers. It has its natural pathways and, later, it will make its own decisions. Besides, we are old enough to realize that the world doesn’t need us --or you, for that matter-- and that kids are not born to perpetuate their parents, but their species.

       Welcome to the world, baby, and as your uncle Albert Einstein once said, may your generation one day put mine to shame.

Thursday, June 20, 2013

Diamond Ring (an unfinished story)

Diamond Ring
Sergio de Régules

“You are going to work where?”
It wouldn’t have made me so angry had this been the first time Mary Rose suggested that she was having trouble believing me. She did so by her words, her tone and her stance –lashing out with chin thrusted forward in that last syllable, like a fist.
         “We discussed this, remember? Diamond Light Source?”
         We had been together since highschool. I think what brought us together were all those things we didn’t have in common –I was sort of a nerdy character, she was a cheerleader, I was a jazz freak, she went for the bubble-gum music of her middle school years, I was kind of pleasant-looking, not your awkward, badly-dressed nerd at all. She was drop-dead beautiful.
         She was also a stutterer. She stuttered when she ordered a meal at restaurants, she stuttered when she talked to her mom on the phone, she stuttered when she called her swimming coach with lame excuses for not being able to go to practice later in the afternoon –“s-sorry, my aunt from Co-co-connecticut is here”, “can’t m-m-m-m-make it, I p-promised to help my m-m-mom with s-s-s-s-s-summer cleaning”. But when she was peeved she didn’t stutter.
Perhaps that’s why she was peeved all the time.
         “Eleck-keleck-keleck-keleck.” That would have been the sound of a happy Mary Rose trying to say electrons or electron synchrotron. An angry Mary Rose –and she was angry when I explained I was moving to the UK— just went ahead and spit elecTRONS at you, stressing the trons instead of the lec, as if to give the particles more momentum, like a turn round the synchrotronic whiplash. On my first week at Diamond Light Source I started calling the synchrotron storage ring Mary Rose.
Unfortunately, I had yet no friends to share the joke with. I was alone in my spartan living quarters when I came up with this bon mot, but I chuckled to myself and salivated in anticipation of the time when I would drop it unto a circle of conviviality at Diamond, no doubt to hilarious effect. I kept picturing the staff and researchers henceforward lovingly referring to the ring by the name of the girlfriend I had left behind in the US.
         “You know what? This is just like you. Why can’t you get a normal job like everybody else? Diamonds and light bulbs? And in the UK!”
         “I’m sorry. Dr. Wyatt thinks going overseas will do me a world of good.”
       “Then you should probably go out with Dr. Wyatt instead of me. Dr. Wyatt hasn’t given you several years of his life.”
         “Well, in fact, he has. He coached me through graduate school and supervised my dissertation…”
         “That’s not what I meant. You never understand anything. You know what? Pack your stuff and go to England for all I care.”
         She emptied one of my drawers on the bed. “Honey”, I said, but I was really past honey-ing her back to a peaceful, stuttering mood. I’d had it. I packed and spent a week at Dr. Wyatt’s before my flight out.
         Fred and I (we’d grown closer in the few days I spent under his roof) were nursing tequilas one evening while Mrs. Wyatt was away when he asked me about Mary Rose. I told him.
         He cackled.
        “Same thing happened to me, kid. There was this pre-Mrs. Wyatt, or a proto-Mrs. Wyatt, if you will. You know what she said when I told her I had decided to be a physicist? She said ‘how are we going to manage on a physicist’s wages?’ Well, that didn’t last much longer, I can tell you.”
         I sipped my tequila. It was too strong for me. And the couch was too bumpy and hard. Couldn’t one afford a new couch on a physicist’s wages?
         “I’m done with Mary Rose. We quarrel all the time. Perhaps it’s better that I’m going away.”
         “You’ll have me to thank for it, then, kid. You’ll like Diamond Light Source.”
         “I work at Diamond Light Source,” I said out loud in front of the mirror later that night, practicing pick-up lines. “How do you do?” At first I wouldn’t let on I was a physicist. Strategy. Let them think I led a life of bright lights, precious stones, and cocktail parties. Diamond Light Source could be made to sound like the name of a special-effects company for big-budget movies, which wouldn’t be a bad thing, either, if I wanted to impress English chicks. Before I went to bed that last night at Dr. Wyatt’s I checked my phone for messages. Nothing.
         One week later I had yet to make any friends and impress any English chicks. I was assigned a special night shift. The hours were long, pulling beams of electrons out of the storage ring and shooting them towards different targets in my assigned beamline. Computers hummed, chair springs creaked and the great ring beyond the beamline walls made its serpentine presence felt by a kind of hiss, or a rubbing noise, like a snake slithering past the walls where I sat alone with my experiment and my thoughts. I had my phone radio app tuned to a jazz station from Toronto. The music played in tinny wisps of sound from the miniature speaker. It entwined with the sound from the massive ring, coupling with it, writhing in ecstasy while the ring spewed electrons into the beamline. I thought of sex in the control cabin with a beautiful female researcher or technician. Was I the only guy ever to have such thoughts at Diamond? Was I a pervert?
Later in my room I thought about Mary Rose and how she mispronounced electrons and her picture merged with the great circle that was the Diamond Light Source itself.

X rays slammed into the sample from Whitney and Slew with a quantum bang and diffracted every which way into the detectors. The computers gobbled the data, churned, and produced a bunch of graphs that to my highly-trained eye were like windows into the subatomic structure of the sampleupon which the chemists down at Whitney had staked all their hopes.
It was not a fullerene.
I delivered the bad news over the phone.
“Sorry, guys. You’re not quite there yet.”
“Shit!" said the technician.
For a couple of months now Whitney and Slew had been sending samples to Diamond Light Source to test. They were aiming for some new kind of super something-or-other that would make them lords of the pigment market in Britain, and possibly in Europe. But for that to happen their samples needed to have a special kind of crystalline structure. That was the only part of their research I cared for or understood. I would place their sample in the experimental laboratory of my beamline and then, late at night, when most in-house staffers were snoring, I would pry a jet of electrons from Mary Rose and send them screaming at almost the speed of light down the beamline. And every time, like a harbinger of calamity, I had bad news to deliver.
At lunch I’d try to look dejected to call attention to myself. So far it hadn’t worked. Every one had their own troubles. I was not the only forlorn soul around. 

Saturday, August 4, 2012

Prometheus and the Scientist

This entry was originally published in Spanish in ¿Cómo ves? magazine, August 2012.

At the foot of the Cerro del Chapulín in Chapultepec Forest there is a fragrant and beautiful park smack in the middle of Mexico City. The park is home to a very Mexican tree species, the ahuehuete, known for its longevity. Some of the ahuehuetes in Chapultepec have their age marked with red paint on the trunk —400 years, 500, 600… The most ancient of these trees were there before the founding of the Aztec city of Tenochtitlan.
I discovered the labels on the trees a few years ago, while strolling in the shade of the old ahuehuetes. I knew that the age of some tree species is determined by counting the growth rings in a cross section of the tree trunk. How could the age of the Chapultepec trees be calculated without cutting them down? I didn’t know it then, but this is the way it is done: you plug a special drill into the trunk and turn a crank until the drill reaches the core of the tree; out of the drill comes a thin, striped cilinder; the stripes are sections of growth rings. You then head back to your laboratory and count stripes under a microscope. The number of stripes gives the approximate age of the tree. To me it was a revelation --and a relief-- to learn that it could be done without killing the tree.

In Search of Time Accumulated
Actually taking the samples, however, can be complicated, as Donald Currey, a graduate student from the University of North Carolina, discovered in 1964. Currey was conducting research on climate change during the period paleoclimatologists call the Little Ice Age, which runs from about 1300 to 1850. During this period world temperatures dipped several degrees. The Little Ice Age had consequences ranging from the biological to the social, but that’s a different story.
Donald Currey needed samples from ancient individuals of the species Pinus aristata, known as brisltecone pine, a tree that dwells in the highest mountains of the southwestern United States. He wanted to do a statistical study of the relationship between the age of the trees and the altitude at which they grow. This would help him tell whether climate changes during the Little Ice Age had modified the altitude of the tree line. If he found very old bristlecones close to the present-day tree line, then Little Ice Age changes could not have been too severe.
Since the 1950s, when Edmund Schulman discovered that bristlecone pines keep very precise and readable registers of climes past in their growth rings, ecologists were convinced that the oldest individuals grew in the White Mountains of California, on the western limit of the species’ habitat. There Schulman found bristlecones more that 4000 years old, which he made famous in an article that appeared in the January, 1958 issue of National Geographic. Schulman died weeks before the article was published.
Schulman’s pines became famous for their eerie beauty. When they reach millennial ages, the gnarled branches of these trees stretch to the sky like pleading arms, and their convoluted trunks of dead, barkless wood seem to fly in the wind like the robes of a Biblical patriarch. The bristlecones of California were also celebrated as the oldest known living organisms.
Donald Currey did not go to California, however, but to Nevada, at the center of the bristlecone habitat. There the young scientist found what he was looking for in a grove of wondrously old-looking pine trees growing at the edge of a deep valley carved out by an ancient glacier in Wheeler Peak. The trees looked as aged as Schulman’s, notwithstanding the dogma that the species only reached extreme ages in California. The young man chose the oldest-looking tree, sank his drill into the trunk, and began to turn the crank. Crick, crick, crick went the drilll as it bit deeper and deeper into the wood of the Methuselah of trees. Crick, crick… CRACK! The crank snapped in Currey’s hand. The device had broken its teeth in the rock-hard wood. Without a spare drill and with the academic calendar against him (he had to turn in a report to the National Science Foundation before the end of the summer), Currey went to the Forest Service for help.

As the first civilization was inventing the plow in Mesopotamia, in a different continent a sapling was growing at the edge of a glacial valley. With the first snows of the alpine winter, at close to 10,000 feet, the little tree entered a phase of lethargic growth as it waited for better times. When the brief summer came, it grew in a desperate spurt to profit from the sunlight and rain. The wood it made during this accelerated growth phase was less dense than the wood produced in the severe conditions of winter. The cycle was repeated through the ages, and the yearly ebb and flow of growth and dormancy was recorded in the stuff of the trunk.
Tree rings represent alternate phases of rapid wood production, when the tree has plentiful sunlight and rain, and slow growth, when sun and nutrients are scarce. Generally, one would expect this cycle to match the cycle of the seasons —in which case each ring would represent a year’s growth—, but if drought strikes in midsummer followed by abundant rains in the fall, the tree will produce two rings. On the other hand, if the whole year is bad —with unseasonable cold, drought and insufficient sunlight—, there simply won’t be a measurable ring to speak of.
Tree rings, then, are not only a proxy for the tree’s age. In their width and other characteristics, nature has written a detailed, year-by-year history of varying weather. Growth rings are like the personal diaries of the tree world. Matching ring sequences from many different trees to average out errors due to double or missing rings, climatologists can build chronologies of past climates. The tecnniques of dendrochronology (dendros means “tree” in Greek), help scientists recognize patterns of climate change with periods as short as one year or as long as several centuries.
Our tree grew old as humanity went from the Bronze Age to the Space Age. Its environment didn’t change much, except for the weather. The land on which it grew remained stable, but for occasional avalanches that deposited two feet of rubble on top of the original ground. The glacier that carved the valley was already long-gone when the tree was a sapling.
But one day in August, 1964…

The Truth and Nothing But?
What happened when Donald Currey went to the Forest Service for help is not clear. One version has it that the scientist asked permission to cut down the tree and take a slab of trunk, which would be more cumbersome than the thin cilinder from the drill, but would certainly simplify the actual counting of the rings. According to another version, it was Donald Cox, from the Forest Service, who suggested that Currey cut the tree, which was, after all, one of many ancient bristlecones in the area. However it happened, Currey went back up the mountain with pack horses and Forest Service personnel armed with chainsaws. The men brought down the ancient tree.
Very satisfied —or perhaps not—, the young researcher took a large wooden slab more than two meters in diameter down the mountain to his hotel in Baker, Nevada. The next day he set the slab on a table outdoors, took out a magnifying glass and some sandpaper to bring out the grain in the wood, and started counting. By the end of the first day he had counted back to the Middle Ages. This did not surprise him, because he already had core samples from 113 trees from Wheeler Peak. He knew they were really old. Currey counted on. The following day he had reached back to the time of the Roman Empire —and he was not even halfway through the counting.
In 1965 Donald Currey published a paper in the journal Ecology. By that time his goal had changed from building a chronology of the Little Ice Age to proving that Schulman had been wrong to believe that the oldest individuals of the species Pinus aristata were to be found only in California. Here is what Currey writes regarding the tree he named WPN-114 (the 114th tree from Wheeler Peak, Nevada): “The tree-ring series contains both distinctively thin (microscopic) rings and difficult-to-count incomplete (locally absent) rings.” This did not daunt the scientist. He went on counting rings for one week. The article continues: “The derived radius measures 2,280 mm to the pith, 100 inches above the original base, and encompasses 4,844 counted rings.” Then, in the same serene, unfathomable monotone, he adds: “Allowing for the likelihood of missing rings and for the 100-inch height of the innermost counted ring, it may be tentatively concluded that WPN-114 began growing about 4,900 years ago.”
The impersonal drone typical of scientific papers conceals what the author must have felt when he discovered that his tree began life before the birth of Greek civilization, and even before the Ancient Empire in Egypt. Schulman’s oldest specimen was 4,600 years old. Currey had found one that was even older… and he had cut it down.

It was Currey’s misfortune that the people of Baker had grown fond of the trees in the old grove on Wheeler Peak. Darwin Lambert, an official with the Forest Service, had formed an association to promote the creation of a national park in the area to protect them. To make things more poignant, Lambert had even named every individual tree. Currey’s was called Prometheus.
In 1966 Darwin Lambert, who by then had nourished the park project for years, heard that a researcher from North Carolina had found in Wheeler Peak the oldest living tree in record. Lambert felt a jolt of excitement at the possibility that it was one of his trees. He procured a copy of the journal where the researcher had published his paper and his heart sank when he understood that the tree in question had been destroyed. Understandably, Lambert flew into a rage and wrote an article in a local newspaper. The media and the public went after Currey, accusing him of killing “the oldest living organism in the world.” Overwhelmed, the young man hid in his university and tried to keep a low profile, as scientists will after a clash with the media.
Now, Currey killed (the term may be too strong in its overtones) the oldest living organism known at the time, which does not necessarily mean that Prometheus was the oldest tree in the world. We do not know the age of every tree in existence. There may be others that are even more ancient. It is misleading to call Prometheus the oldest living organism in the world. And exactly what is an individual organism? Many plants reproduce by a kind of natural cloning mechanism consisting in throwing offshoots that are genetically identical to the original plant. The offshoots form a clonal colony. One can argue that the clonal colony is an organism that lives on even if the individual plants die. There is a clonal colony of creosote bushes which we know for certain to be 11,700 years old. In the state of Utah there is a colony of quaking aspen trees linked by an enormous root system that has lived for some 80,000 years (though not one of the individual trees is more than a couple of centuries old). Prometheus was the oldest living non-clonal organism known in 1965, not simply the longest-lived being on the planet.
One more detail: Currey found on Wheeler Peak the remains of pines of the same species scattered all over the place. The trees had been cut down without consideration by surveying expeditions in the 19th century. Some of those trees were probably older than Prometheus. Currey was “appalled by the destruction.” This was not contrition enough. In the eyes of the public he remained a heartless murderer.

Two Martyrs
Today bristlecone pines are recognized as useful to science. In 1970 a researcher by the name of D. K. Bailey found variations in the form of the pine cones and needles of bristlecones from different regions. Bailey proposed dividing the species in two: Pinus aristata and Pinus longaeva. Climate chronologies based on the growth rings of this species as well as on pieces of deadwood (dated by radiocarbon) reach almost 9,000 years into the past. The oldest living non-clonal organism known today is one of Schulman’s bristlecones. Named Methuselah, it is 4,844 years old as of 2012 and its location is kept secret.
There is another turn of the screw in the story of Donald Currey and the Prometheus tree. Darwin Lambert, the national park advocate, and his group never could get the US National Park System to approve the recommendation to create a park in the mountains of Nevada. The area’s resources (mining, hunting, pastures) were too rich to give up in the name of tourism and the environment. Powerful lobbies opposed the park. The death of Prometheus gave the project a new edge by focusing attention on the need to protect bristlecone pines. Currey’s error contributed at least a little to tilt the balance and finally, in 1986, the Great Basin National Park was created.
Donald Currey endured as best he could the grief that his mistake caused him. At the time of his death, in 2004, he still was not over it. As for Prometheus, all that remains of the once proud ancient is an inglorious stump.

Saturday, June 16, 2012


You are locked in. Outwardly, you are dead -no movement, no reactions, no emotions, just bodily functions driven by machinery.
    But you are conscious, only there is no way you can tell the world. You listen to conversations around you -it's an election year, it appears-, you agree, you disagree, you strongly disagree.
   You know your family is grieving. You'd like to let them know you are there, but you are locked in, as if in a different plane of existence, in a parallel universe.
   One day one of the voices you spend your life listening to to pass the...time?... addresses you.
   "Can you  hear me?" it says, incongruously. The owner of the voice knows that, whatever the answer is, you will not answer. However, it is clear that the owner of the voice thinks that the answer is yes.
   The voice says something odd.
    "Imagine you are playing tennis."
    You do. You have never played, but you have no trouble imagining the sequence of movements needed to hit the ball. You imagine the sun on your face while you're at it and just for the heck of it.
    "Now imagine you are walking around your house. Show us around."
    You go upstairs to your room. "This is my room," you'd say. Then down to the yard.
    Elation in the other universe.
    They make you repeat the tasks. It has been so long since anyone last asked you to do things. Your family talks to you, but they never ask you to perform tasks. They do not really believe you can hear them. Now someone is requiring you, the locked-up patient, to actually do things. How do they know you are responding? You tell yourself they probably have you in some kind of brain scanning machine.
    You wait for more instructions, but the voice just wants you to perform these two tasks over and over. Might you be dreaming? What does dreaming mean in your universe?
    Then you understand.
    "I'm going to ask you some questions", the voice says. "I want you to imagine you're playing tennis if the answer is yes and imagine you're walking around your house if the answer is no, ok?"
    Clever, you think (how does that thought show on the brain scanner?)
    "Is your father's name Thomas?"
    You go around your house.
    "Is it Alexander?"
    Tennis. Yes!
    "Do you have brothers?"
    Whack! You hit the tennis ball with all your might and mark a point. Yes! Yes!
    "Do you have sisters?"
    A quiet walk from the yard to the living room. You don't have sisters.
   "That is correct," says the voice, barely containing its elation after several more questions. You are elated too.
    They have found you.
    Time passes, you don't know how much. Time means little to you in your locked-up universe. The voice comes back. You can sense the hesitation when it says:
    "This is something your family wants to know. I don't know how else to put it. Should we discontinue life support?"

Wednesday, July 28, 2010

Two Musicians

Watch this video of two musicians playing a two-violin arrangement of Mozart's sonata in C major K 296. They reach for their instruments, grab their arches. One look and they're off --the voices of the instruments mingle, each answering the other. One suggests a new direction, the other takes the challenge and ups the ante, and down the new path they go, frolicking in the cascades of sound. Together they weave a web of pure, exhilarating structure. The mathematics of Mozart!

One of these players is a professional violinist, the other a particle physicist. Can you tell which is which? How can you tell?

Friday, July 2, 2010

Venus, a "Pulquería", and an Observatory

People strolling around downtown Mexico City in 1875 might have come across countless “pulquerías” with odd names (pulque is a beverage made from the fermented sap of the maguey plant, Wikipedia dixit). But for weirdness of denomination none beat the latest addition to the long list of hangouts for the brothers in pulque: ”El tránsito de Venus.” The name was no allusion to Roman mythology, but the pulque fraternity´s way of celebrating a major scientific event that took place in 1874.

That was the year a Mexican expedition traveled to Japan to observe the transit of the planet Venus across the sun´s disk. Venus transits occur in pairs, the second transit in a pair coming eight years after the first. Consecutive pairs of transits happen at intervals of more than one hundred years. The transit of 1874 was the first in a pair, the previous one having taken place on June 3, 1769.

Venus transits are interesting because they allow scientists to measure “solar parallax” --a quantity from which the earth-sun distance can be accurately computed. The Mexican team was part of an international effort to determine solar parallax. Enthusiastic about the project, President Sebastián Lerdo de Tejada chose Francisco Díaz Covarrubias, a geographer from the Colegio de Minería, as head of the expedition. There were, at the time, no secure roads between Mexico City and the Pacific, so Díaz Covarrubias and his team took a train to Veracruz, stopping in Orizaba for several days after learning that an epidemic of black vomit was ravaging the port. From Veracruz they traveled to Havana and Philadelphia, then on to New York, where they inquired about ships leaving San Francisco for Japan. (No, I don´t know why they took such a roundabout route.) They then crossed the United States, arrived in San Francisco, and on October 19, sailed aboard the steamer Vasco de Gama. The Mexican expedition made landfall in Yokohama on November 9, 1874, precisely one month before the transit.

Díaz Covarrubias intended to build two observation stations on Japanese soil, but he needed permits. Unfortunately, they had reached Japan at the time of a national holiday, and Díaz Covarrubias had to wait for several days before he got an answer from the Japanese government. During this time he hired a Chinese carpenter who understood some English to assemble the stations. When the government finally responded, it did so handsomely. They even provided a special telegraph line for the Mexicans to communicate with their American and French counterparts, in Kobe and Nagasaki. The transit was duly observed on December 8-9, 1874.

Díaz Covarrubias and his men sailed home via the Indian Ocean, the Red Sea, the Suez canal, the Mediterranean, and Paris, where they published their results. They then crossed the Atlantic to Veracruz. On November 19, 1875, the train carrying the Mexican expedition rolled into the Buenavista station. The men were given a hero’s welcome, recounted the following day in the daily El siglo diecinueve .

I wonder if the event stirred the patrons of “El tránsito de Venus.” Did they discuss it? Did the pulquería take pride in making the news that day? Did a chorus of pulque-besotted voices toast the men who had sailed around the world to witness the event celebrated in their saloon´s strange name?

Whatever the reaction of the pulquería´s clients, the following year Porfirio Díaz, the new president (and future dictator), signed a decree whereby Mexico was officially given a National Observatory.

Monday, April 12, 2010

A Message from the Future

I'm strolling leisurely along the darkest corridors of the web in search of nuggets of information for my radio program tomorrow. Newscaster Pedro Ferriz asked me to talk about the Large Hadron Collider, the largest particle accelerator in the world, which has made headlines now for 14 months, since it's opening -and subsequent failure- in September, 2008.

I come across a blog in portuguese (from Portugal? from Brazil? I'm guessing Brazil...). A post in that blog reports that a few days ago a strange young man was arrested by Swiss police after he tried to sabotage the LHC. Sabotaging the LHC is not easy. The thing lies hundreds of meters underground, and the facilities are protected by heavy security, but the blogger does not go into details. The would-be saboteur may have tried to tamper with the power grid in the region (though I don't know how he might manage even that...). When questioned, the strange-looking young man -who was decked in even stranger-looking clothes- claimed he was a visitor from the future. His mission was to stop the LHC from creating the Higgs boson, a particle expected to appear after protons and antiprotons collide at great speed, sometime between today and 2012. Apparently, if the chronotraveler is not wrong, the Higgs boson will bring forth great destruction ("and gnashing of teeth," one is tempted to add, like in the Bible).

It would be great if we could believe this young man from the future. Indeed, if he is right, that means that the Higgs boson really does exist! The LHC was built to answer that question. Now we can all relax and maybe even break out the champagne.

Or maybe not. Scientists don't plan multibillion-dollar experiments just to be proven right. They will be happy if nature presents them with the Higgs, which was predicted theoretically more than 40 years ago, but what would really give them a champagne-worthy thrill is to be proven wrong. Nothing makes for more exciting times in science than the discovery that everything we thought we knew is not so. If, after 20 years of work on the collider, not to mention the billions of dollars it cost, the thing only tells the scientists they were right, and nothing more, it will actually be a catastrophe. A confirmed prediction is a sort of dead end. No new roads to take, no different outlooks to pursue. No new scientific work to do. Scientists like surprises. And they thrive on challenge. If the Higgs turns out not to exist, the discovery will immediately suggest new paths and it will open wide vistas of possibility. That means a lot of work for a lot of people, young and old. Even Peter Higgs -who is pushing 81- might join in on the action (though he would probably miss his shot at the Nobel Prize).

So, even if the saboteur from the future is correct, we should not stash the LHC in the closet. Let's go looking for new lands. Let's risk being awfully wrong after 40 years. That's what science is about.