In 1967, a war veteran believed that moving around a computer could be easier. So he created the first mouse

Things were clear from minute one. When Douglas Engelbarthead of the Augmentation Research Center (ARC), at Stanford, wanted to interview a new recruit, gave him a pencil attached to a brick and then asked him to write his name on a piece of paper. Difficult, right?, joked Engelbart, a doctor in electrical engineering and a pioneer in computer development. Well, people would encounter the same problems, he explained to the candidates, if they were not able to offer them more agile and simple tools to use computers. He wasn’t talking just to talk. Engelbart, together with one of his colleagues, also an engineer William Englishwas the father of the first mouse computer in the 1960s. Only that one was not called a mouse, but XY Position Indicator for a Display System; and its design was quite different from the modern peripherals that we use today. To begin with, it was made of wood and had a pair of metal wheels. This is your story. Make it easy for people: “Click” In the early 1960s, Engelbart, a World War II veteran, recent PhD and with just a couple of years of experience at the Stanford Research Institute —today known as SRI— had a clear idea: he wanted accessible technology. And simple. In 1945, while serving in the US Navy, he had read an article by the inventor Vannevar Bush who encouraged scientists to bring knowledge to the streets and he was determined to transfer that slogan to his own field. The golden opportunity came when the Department of Defense, through DARPAgave him the necessary support to set up his own center in the SRI, the ARC. There he had nearly fifty people working for him and efforts were focused on answering a question: What would the future of computer communication be like? At that time, computing had been in development for decades; IBM had manufactured the IBM 650 and the team was convinced of the enormous potential of the sector. The question was how to use it and prevent the systems from being as unwieldy as a pencil stuck to a brick. At that time the most popular devices for pointing on a screen were optical pencilsa system similar to that used in military radars. Since 1961 Engelbart, however, ruminated on an alternative. To make interaction with computers more efficient: install a pair of small wheels across a table so that the user could operate the screen cursor with them. One would rotate horizontally and the other vertically and its operation would be very similar to that of the planimeter commonly used by surveyors, geographers and architects. The idea had been recorded in his notebook, but already in the 1960s, with the financial backing of DARPA, his own team and extra help from NASAEngelbart was able to delve into it. The veteran and his colleagues gathered the best signaling equipment that existed and made a kind of brainstorming which left half a dozen proposals for working with monitors, some of the most curious, such as a joystick or a light pen. Perhaps the most striking of all was a mechanism that was fixed under the table and operated with the knee. A prototype nicknamed “mouse” Also included among that amalgam was a small device manufactured by Bill English after reviewing his notes from the beginning of the decade with Engelbart. The prototype basically consisted of a carved redwood block which included two wheels crimped at the bottom and a button at the top. Your name: XY Position Indicator for a Display System. Its appearance, compact and with a cable protruding, However, it ended up earning him the nickname “mouse.”. It was so comfortable that it prevailed over the rest of the laboratory’s alternatives and the team included it as a standard piece in their research. The SRI applied for the mouse patent in 1967 and received it in 1970. Engelbart and his companions did not stop there. They continued looking for a “companion” for the mouse, another device that the user could operate with their free hand and could use to enter commands and text. After several tests they opted for a device similar to a telephone with five keys. They also carried out tests to perfect the mouse design as much as possible. “We did a lot of experiments to see how many buttons it should have. We tried up to five. We decided on three. That’s all we could fit in. Now, the three-button mouse has become standard, except for the Mac,” Engelbart himself recalled in 2004, in an interview with Wired. With all this material and the rest of the inventions developed by his team, the war veteran decided to put on a gala performance. One like a beast. In 1968 they organized known as “mother of all demos”a historic conference held in San Francisco in which Engelbart showed all the functions they had developed over the last few years. “For 90 minutes, the stunned audience of more than a thousand professionals witnessed many of the features of modern computing for the first time: live video conferencing, document sharing, word processing, windows, and a strange pointing device jokingly referred to as “the mouse“The elements of the screen were linked to others through associative links or hypertexts,” explains the Computer History Museum. “People were amazed. In one hour, it defined the era of modern computing,” English commented to New York Times in 1996. Shortly after that historic achievement, however, the team began to lose its drive. Some staff questioned the lab’s drift, DARPA cut its funding, and other research centers began to emerge, such as the Xerox in Palo Alto (PARC). Result? Many of Engelbart’s employees sought new destinations. With them went the very concept of the mouse. The device, with a trackball, ended up being incorporated into the Xerox Alto computer and in 1983 Apple marketed it with its computer Lisa. After a while –as you remember Washington Post— Steve Jobs’ company was behind almost half of … Read more

We believed spring was here to stay. We were wrong and in the worst way

And that mistake has a name and surname: Therese. It is number 19 of the season and, with its mere existence, it already means an absolute record since we started naming storms. But it’s not going to stay like that. The high-impact storm will suddenly break into Spain and it will be noticed. In a matter of 48 or 72 hours, temperatures will drop up to 8 degrees in the interior of the peninsula while the Canary Islands suffers the most intense storm in more than a decade. And, right after, the polar cold. But let’s start with the storm. Therese formed as a cold low west of the peninsula on Tuesday the 17th and was named by the Portuguese meteorological agency. Its effects will vary a little depending on the area of ​​the country we look at. In peninsular Spain, the thermal decrease started yesterday in the southwestern half and, little by little, it will move to the northwest. If the falls so far are about 3 degrees, will increase up to 6 degrees in the Pyrenees, the interior of the Valencian Community and the Basque Country. That is, for now, it will only be a little cold. The Canary Islands, on the other hand, have some very complicated days. AEMET has already issued the warnings and it is expected that Sunday the 22nd will be very adverse. More than 300 liters in La Palma and Tenerife, wind gusts above 90 km and snow on Teide. And after? Then we will suffer a polar irruption at the gates of Holy Week. Or, at least, that’s what the main meteorological models say: that an anticyclonic ridge will rise towards the north from the Atlantic and will send us a mass of polar air. We expect precipitation in Galicia and the Cantabrian Sea, frost in the northern mountains and cold. quite cold. Not much: Spain has not recorded a single cold day record for four years. But enough to turn many Easter plans upside down. A different spring that looks a lot like a new normal. Be that as it may, the news it is again the extremely twisted polar jet: the same phenomenon that (with the help of some other factor) has been giving us rain for all these months and that, now, returns again. Image | ECMWF In Xataka | The snowiest ski resort in Europe right now is not in the Alps or the Pyrenees: it is in Granada

We believed that machines could only beat us at chess or Go, but now they are preparing to beat us at tennis

Kasparov succumbed to Deep Blue and that showed that machines could finally surpass humans. Then came defeats in other fields (Go, StarCraft), but always with algorithms as the protagonists. Now those who want to surpass us are the robots, and after some disappointments and also amazing previewsare wanting to conquer a sport that poses an exceptional challenge: tennis. Be careful, Alcaraz, the robots are coming. Researchers from Tsinghua University and Peking University, among others, have collaborated to develop a robot capable of playing tennis. The project has been named LATENT (Learn Athlethic humanoid TEnnis skills from imperfect human Motion daTa) and it is surprising because the principle is very similar to that of developments like AlphaZero: the machine (the robot) practically learns to play by itself. We have already seen similar advances with sports like ping pong or with kung fu demonstrationsbut this milestone has been achieved in a different and striking way. imperfect movements. Until now, getting a robot to react at the speed of a tennis ball was an almost insurmountable challenge due to the lack of perfect movement data, but the advances made by these researchers are especially striking. Especially since these machines now use “imperfect” information captured from humans to learn how to play. Mini tennis. Capturing accurate data from a real tennis match is very expensive and complex due to the size of the court and the subtlety of the tennis players’ wrist movements. To solve this, the LATENT team chose to collect “primitive skills” data. That is, the robot was shown basic movements such as the forehand drive, backhand, or lateral movements. In addition, an area 17 times smaller than a professional court was used precisely to reduce the complexity of the initial system. The objective: that from there the robot could develop its own technique. Learn from your mistakes. The striking thing about this development is that with those few data the robot was capable of making corrections on the fly when moving or hitting the ball. Thus, he was able to maintain the stability of his body following the style of human movements, but he was also able to finely adjust the angle of the racket to impact the ball appropriately. No strange things. The researchers also wanted to prevent the robot from starting to “make up” strange movements during its reinforcement training. Thus, they created a technique that forced the AI ​​to explore only human-like movements based on the initial data distribution. Unitree G1 already plays tennis. To translate their system into reality, the researchers installed this system on a Unitree G1 robot. This model of humanoid robot It has 29 degrees of freedom and a racket was attached using a 3D printed part. The physical tests were surprising: the G1 was able to return balls thrown at more than 15 m/s (54 km/h), but it was also able to maintain rallies with human players on a real court. The robot was capable of covering a large part of the court and dynamically adapting its posture according to the trajectory of the ball. The beginning of something bigger. These tennis robots are very far from being able to compete with human players—much less with professionals—but they demonstrate that reinforcement learning techniques that have been applied in games such as chess or Go may be valid for physical environments with robots. In fact, this advance raises the possibility that robots can learn any physical discipline (whether sports or not) from a limited learning of basic movements. In Xataka | And finally the human being beat, with much drama, a robot playing ping pong

We believed that AI was killing jobs in the tech industry. It is actually changing the rules of the game: Crossover 1×41

It is possible that in the future AI will take away our jobs, but at the moment it is being taken away from very few. This was stated in a recent Anthropic study on the impact of AI on the labor market, and this is a perfect perch to present the debate that concerns us in Crossover 1×41. And it is a special edition because we have as a guest Jordi Arrufiof Talent Arena. This event, which is held within the framework of the Mobile World Congress in Barcelona, ​​is aimed at future developers and also senior profiles, and with it we had the opportunity to talk about how AI is changing the rules of the game for professionals in the sector. To begin, we must dispel myths. At least for now, because although there was a time that AI was going to replace programmers, what is being seen according to Arrufí is that The demand for technological talent is increasing. In fact, what is expected is that the impact of AI will cause this technology to begin to create jobs that we cannot even imagine. We also couldn’t imagine that with the rise of the Internet there would be frontend and backend developers or web designers: the same in this case. Many professionals may fear that future, and here the recommendation to be prepared for the future is that these professionals combine your technical capacity (‘hard skills’) with human capabilities (‘soft skills’) such as critical thinking, leadership or communication. The frenetic advancement of AI also makes the ability for continuous learning and adaptability key in these changing times. He vibe coding has changed the paradigm, and has opened this area even to users without basic programming knowledge. Plus there is something striking here. A real opportunity for current professionals and those to come, because if something is clearly taking off it is interest in technological sovereignty. Europe seeks to recover ground against the US and China through investments in chipsFor example. Public funding is especially critical to retaining talent and prevents professionals from emigrate for higher wages. We also had the opportunity to talk about another of the areas of greatest projection: robotics. It is expected a imminent adoption of humanoid robots in industry and in logistics processes. Domestic robots will take longer, no doubt, but what seems clear is that by 2035 the world will be dominated by AI agents and massive advances in fields such as biotechnology. This is not just about AI: It’s about talent, money and who adapts faster and in a more accurate way. On YouTube | Crossover In Xataka | A startup from Malaga is the most used European AI app in the world according to Andreessen Horowitz. It’s called Freepik

We believed that human programmers would end up being code reviewers. Anthropic just killed that

The rise of the Generative AI The world of software development seemed to follow a clear script: models would write the code and humans would review it. It was the new balance. Well, Anthropic just killed him. The problem of programming with AI. What we know today as vibe codingthis practice of giving instructions in natural language to an AI so that it generates code at full speed, has skyrocketed software production in companies. Anthropic affirms that the amount of code generated by each of its own engineers has grown by 200% in the last year. And now there’s a problem: there’s so much new code that reviewing it has become the bottleneck of the process. Human developers can’t cope. Many pull requests (change proposals that must be reviewed before integrating new code) are skimmed or not read very carefully at all. What Anthropic has done. The company Code Review has been releaseda tool integrated into Claude Code that, instead of waiting for a human to review the code, deploys a team of AI agents to do it automatically every time a pull request is opened. This new system is now available in preview phase for Team and Enterprise plan customers. Cat Wu, Product Manager at Anthropic, explained told TechCrunch that the question they constantly received from their clients’ technical managers was always the same: “Now that Claude Code is generating a ton of pull requests, how do I make sure they are reviewed efficiently?” How it works inside. AI agents work in parallel autonomously the moment a pull request is opened, examining the code from different perspectives. An end agent then aggregates and prioritizes the issues it has found, removing duplicates and sorting them by severity. The result reaches the developer through a featured comment, accompanied by more online comments about specific bugs. The focus, according to Anthropicis in logical errors, not in matters of style, something designed on purpose so that the feedback does not generate too much noise. Issues are labeled by color depending on how important they are: red for critical, yellow for attention, and purple for pre-existing code. Numbers. The company has been using Code Review internally for months before launching it to the market. According to what they saybefore implementing it, only 16% of their pull requests received meaningful review comments. With the tool, that percentage rises to 54%. In large pull requests (more than 1,000 modified lines) 84% returned results, with an average of 7.5 problems detected. And less than 1% of those results are flagged as incorrect by the engineers themselves. In one of the cases documented by the company, they spoke of a single line change that seemed routine. However, Code Review marked it as critical, as it apparently could have broken the entire service’s authentication. The bug was fixed before integration. Furthermore, according to the company, the engineer later acknowledged that he would not have caught it alone. ANDhe new role of the programmer. The narrative that had spread in the last two years was that developers would evolve towards a profile closer to that of a reviewer or supervisor of code generated by AI. Now that transition is also being automated, at least in part. Anthropic does not eliminate the human from the equation (in fact the tool does not approve pull requests), but it does compress the review work that was supposed to be the last bastion. It seems that now the human goes from reviewer to final arbiter. Price. It is not a cheap tool. Each revision has a cost based on token consumption. Anthropic esteem The average price per review is between $15 and $25, depending on the complexity of the code. It is a cost that the company justifies in the context of large technology companies where errors that escape review have a much higher price. Cover image | Compagnons In Xataka | Software companies sank on the stock market for a simple reason: investors are panicking about AI

We believed that GLP-1 drugs were only going to change obesity. They just turned upside down how we treat addictions

The famous GLP-1 receptor agonistsamong which some protagonists such as Ozempic stand out, have revolutionized the treatment of type 2 diabetes and of obesity. However, for some time patients and doctors had been reporting a “side effect” that was as surprising as it was hopeful, since it was seen that this treatment made people not feel like drinking alcohol or smoking. New routes. What began as a trickle of anecdotes in doctors’ offices has ended up being the target of study by different research teams who have seen here a new way of understanding the mechanism of addictions in humans. Now, a recent study published in B.M.J. backed by new clinical trialssuggests that these medications could be the key to treating addictive substance use disorders. How it looked. The heavyweight of this new research is a gigantic cohort study published in 2026, where the data of 606,434 United States veterans with type 2 diabetes. Here it was divided into two groups: those who started treatment with GLP-1 drugs such as Ozempic and those who took SGLT2 inhibitorswhich is one of the accepted treatments for advanced type 2 diabetes. The results. But the most shocking data came when analyzing patients who already had a previous history of addictions. In this group, the use of Ozempic resulted in a dramatic decrease in addiction problems requiring urgent treatment, but also saw a lower rate of hospital admissions, lower drug-related mortality, a drop in overdoses, and even a significant reduction in suicidal ideation and attempts. The essays. Although observational studies are very valuable, they also you have to go to the laboratory to see what is happening. Here, a 2025 randomized trial demonstrated that taking Ozempic dramatically reduced alcohol self-administration in a laboratory setting. Here patients reported less anxiety about having to have a drink or a cigarette, fewer days of heavy consumption, and incidentally, a decrease in the number of cigarettes they smoked per day. In the past, a study published in 2022 showed that using exenatide it was not possible to generally reduce the days of consumption of these drugs, but it was possible to see how the drug had a direct effect on some specific parts of the brain that are related to the reward centers. Because? That a drug designed for the pancreas affects our relationship with alcohol and tobacco, the truth is that it can raise many questions. The answer lies in the brain, since some reviews suggest that GLP-1 receptors not only regulate blood sugar or slow down gastric emptying. These receptors are also found in key brain areas that control the dopamine pathway, which is why, by activating them, drugs such as emaglutide or liraglutide attenuate the sensation of reward. In rodents, for example, they block the reinforcement produced by substances such as cocaine, opioids or nicotine and, basically, the drug stops “feeling good.” A paradigm shift. As can be seen every day, constant drug use over time can have devastating consequences for the lives of people and those around them. The problem is that right now there are few approved pharmacological therapies to support these addicts, and this makes any clue to have a new therapeutic door welcome. Although more research and large-scale Phase III trials are needed for regulatory agencies to officially approve their psychiatric use, GLP-1 drugs appear to be doing something that medicine has been seeking for decades: “satiating” not only physical hunger, but also the brain’s chemical hunger. Images | lilartsy In Xataka | Ozempic not only eliminates hunger, it is rewriting the supermarket ticket: goodbye to ultra-processed foods and spending on snacks

Science had always believed that only humans understand geometry. Until we noticed the crows again

The perception of geometric regularity in shapes, a variant of elementary geometry, has long been considered an ability that only human beings had. And it is no wonder, since from quite early stages of development and across multiple cultures, our species has demonstrated a natural understanding of spatial rules. But this has changed in a species similar to crows. A radical change. Although this innate quality of humans was quite well established, science has now shown that the crows too They have geometric understanding. A cognitive milestone that rethinks what we thought we knew about animal intelligence and the evolution of pure mathematics. A myth. The scientific bases showed a notable gap between human abilities and those of the rest of the animal kingdom with regard to euclidean geometry. Previous research had already seen that primates lacked the ability to recognize geometric regularity in tests of visual perception of shapes, something fundamental, since they may be the first that come to mind when thinking about this property. And this was crucial to determining that humans have an innate ability to process geometric regularity, since the recurring inability to species like baboons After intensive training he laid these foundations. However, the researchers decided to explore these abilities in birds known for their impressive cognitive and arithmetic skills. Touch screens. To test birds’ spatial intuition, scientists from the University of Tübingen They designed an experiment based on the detection of visual anomalies. In this case, two 10- and 11-year-old male crows were trained using touch screens located inside conditioning chambers. Here the birds could observe an array that displayed six simultaneous shapes on the screen and the task was to detect an “intruder”, that is, to peck at the shape that differed in its visual parameters with respect to the other five base stimuli. The tests. For the final test, five reference quadrilaterals were used, ordered by their level of regularity: the square, the isosceles trapezoid, the rhombus, the right hinge, and a completely irregular shape. From here on, the “intrusive” figures were artificially generated moving the lower right vertex of the original figure at a fixed distance equivalent to 75% of the average distance between the vertices. Results. The most impressive thing seen was the immediacy of understanding the problem, as the crows were able to apply the concept of detecting the intruder immediately upon being exposed to the new sets of quadrilaterals. Both subjects dramatically exceeded the 16.7% chance level during their first trials, demonstrating that they understood the task without hesitating or mindlessly pecking. Furthermore, during the first 60 trials, the first crow achieved 48.3% success and the second crow 56.7%. The most impressive thing. The most revealing data from these tests was precisely that the birds showed significantly better performance with shapes that presented properties of pure Euclidean geometry, such as right angles, parallel lines or symmetry. It is crucial here to highlight that this performance advantage did not require extensive prior training, but rather the regularity effect was present from the very beginning of the testing phase. Because? Faced with the logical question of why crows achieved what other primates failed, the authors of the study recognize certain important methodological differences compared to classic experiments with baboons. In this case, they point out that the crows were subjected to a strict progress criterion during training, needing to maintain 75% correctness over five consecutive sessions. In contrast, baboons only needed to reach a criterion of 80% correct responses only once, without the need for consecutive sessions. And although this difference may make a direct and exact comparison between the species difficult, the main finding is incontestable: crows recognize geometric regularity. Images | Tyler Quiring In Xataka | Punch, the monkey clinging to a stuffed animal and a victim of bullying, has achieved the impossible: uniting the Internet under the same cause

We believed that Generation Z was returning en masse to the Church. An error in a survey is to blame for the mirage

Stadiums vibrating with thousands of twenty-somethings raising their arms, eyes closed, singing to god. International pop stars posing in nun’s habits on the covers of their most anticipated albums. And, as a backdrop, an incessant barrage of headlines announcing the unthinkable: the massive return of the youth to the church pews. Over the past few months, the world seemed to witness a fascinating twist in the script. Generation Z, the most secular and secularized demographic cohort in history, was re-embracing Christianity. However, when you scratch the surface of this apparent spiritual awakening, what emerges is not a collective epiphany, but a trap. A gigantic demoscopic mirage. What they sold us as the great rebirth of faith is, in reality, a monumental miscalculation where the armies of artificial intelligence, the mischief of paid online surveys and the desire to believe in a revival have completely distorted the true—and much more complex—religious transformation of young people. We believed that faith was returning to the streets, but the fault was in the method. The spark that ignited the narrative of the great Christian revival jumped in the United Kingdom with the publication of the report The Quiet Revivalcommissioned by the Bible Society. Based on survey data YouGov, The study showed a spectacular figure: monthly church attendance among English and Welsh young people aged 18 to 24 had quadrupled, going from a marginal 4% in 2018 to a resounding 16% in 2024. The news spread like wildfire. Entire dioceses held conferences to “turn up the volume” on this revival, and politicians in the British Parliament used the report as proof that “Christianity is neither oppressed nor decayed,” as reported by BBC. However, demographic experts were quick to raise alarm bells. Surveys considered the “gold standard” of sociology for using random probability samples—such as the British Social Attitudes wave Labor Force Survey— showed a diametrically opposite film. According to these rigorous metersthe percentage of practicing Christians between 18 and 34 years old had not only not risen, but had fallen from 8% in 2018 to 6% in 2024. The danger of surveys opt-in If young people are not filling the churches, where do the miracle figures come from? The answer lies in the architecture of the internet itself. The report of the Bible Society was based on surveys opt-inthat is, panels where users voluntarily register in exchange for financial rewards or points. Demographer Conrad Hackett warns that this format suffers an “existential threat.” Those who respond to these surveys usually seek to maximize your profits filling out questionnaires at full speed, lying about their age to access more surveys, or using Virtual Private Networks (VPN) from other countries to get paid in hard currency. Worse still, Artificial Intelligence has come into play. The researchers have detected armies of chatbots programmed to imitate humans and fill out surveys en masse. The fake young people in these polls are so unreliable that, in similar studies carried out in the USA12% of those surveyed opt-in under 30 years old even stated that he had a license to pilot a nuclear submarine. The “great awakening” was largely an algorithmic hallucination. The situation in our land In Spain, the optical illusion is similar. Phenomena like Hakuna Group Music They managed to bring together 12,000 young people at the Vistalegre Palace, while events such as Calls They gathered 6,000 people at the Movistar Arena. Both are betting on Contemporary Worship Music (CWM), an evangelization format of Protestant and evangelical heritage, full of giant screens, pop-rock and raw emotions. But the noise of the stadiums clashes head-on with the silence of the parishes. The comparison of the official reports of the Spanish Episcopal Conference (CEE) is devastating. If we analyze the transition from the previous exercises to the most recent data, the fall of the sacraments is an undeniable constant: Baptisms: They fell from 152,426 registered in 2023 at 146,370 in 2024which represents a year-on-year decrease of 3.97%. The magnitude of the collapse is better understood if we look in the rearview mirror: in 2007the Church celebrated no less than 325,271 baptisms annually. Communions and weddings: Inertia drags the rest of the life cycle. First communions fell by almost 5% (standing at 154,677), and Catholic marriages fell by 6%, remaining at a reduced 31,462 ecclesiastical unions. Institutional collapse has other profound social consequences. Given the collapse of baptismal prayers, more than 150 Spanish town councils now offer “civil baptisms” or lay welcome ceremonies to celebrate the arrival of newborns. At the same time, the bleeding of vocations has left Spain with only 15,285 priests, whose average age is around a worrying 65 years. The problem It’s so pressing that has forced bishoprics like that of Tui-Vigo to make lay women official to lead “Celebrations of the Word” in the villages in the face of the total lack of priests. The only discordant note—the small statistical lifeline to which the Church clings—is the baptism of children over 7 years of age. This figure experienced a reboundrising from 11,835 in 2023 to 13,323 in 2024. A figure that suggests a paradigm shift in Spanish Catholicism: conversions that are much more thoughtful, personal and less conditioned by “cultural” inertia. The great gap between Spirituality and Religion To understand Generation Z in Spain, two concepts must be drastically separated: the Catholic institution and the search for the transcendent. Here comes into play what my partner in Xataka defined as: “The 29-59% paradox.” According to the Barometer on Religion and Beliefs in Spain (BREC) of 202561% of young people between 18 and 24 years old declare themselves indifferent, agnostic or atheist. Only 29% define themselves as Catholic, a figure much lower than the 46% national average. However, just because they don’t set foot in a church doesn’t mean they are pure materialists. That same report reveals that 59% of young people firmly believe in the existence of the soul and 45% in “energies.” As the sociologist Mar Griera explainswe are not facing a return to dogma, … Read more

We believed that imagination was exclusive to humans. Kanzi, the bonobo who drinks “invisible coffee”, has just proven the opposite

For decades, cognitive science has drawn a firm red line between us and the rest of the animals that is the imagination. Although animals can use tools and even solve complex problems, the ability to disconnect from immediate reality and imagine a scenario that does not exist was considered something exclusive to humans. Until Kanzi arrived. Kanzi. A bonobo that is world famous for its mastery of lexigrams to communicate and that has now starred a published study this week in the magazine Science that could rewrite the books of evolution. And it is no wonder, since Kanzi not only knows how to order food, but also knows how to pretend to eat it when it’s not there yet, and being completely aware of what it does. The tea party. The study published earlier this month presents the strongest evidence to date for the representation of pretend objects in a great ape. And for a human Pretend you are drinking coffee by imagining you have a cup in your hand It is something very simple to do. But until now in apes it was something unthinkable. But to prove us wrong about our exclusive quality, the studio designed an experiment where they sat Kanzi down and interacted with empty objects. Specifically, they pretended to pour juice from an empty bottle into a juice or eat “grapes” that did not really exist. But the best thing is that it was not a simple imitation, but Kanzi followed the game with astonishing precision as if he really imagined it. The juice trick. The objective here was to rule out that Kanzi was simply copying movements without understanding the basic concept, and to do this the team designed three tests. The first of them began with the researcher pretending pouring juice into one of several empty glasses. Kanzi was then asked to interact with them by picking one up. In this case, in 68% of the 50 tests, Kanzi chose the glass that “contained” the imaginary juice, ignoring the other identical but “empty” glasses. Fact versus fiction. This is where the crucial point of the investigation is, since if Kanzi were confused, he would treat real and imaginary juice the same. This was not the case, since when given a choice, Kanzi preferred the real object in 78% of the cases. Something that may seem insignificant, but that shows that it maintains two simultaneous mental representations: the physical reality of the empty glass, and the fake reality where we play that the glass has juice. The same thing happened when imaginary grapes were used instead of juice, where Kanzi maintained a 69% success rate in identifying the location of the pretend food. Decoupling reality. The technical term being discussed here is decoupled secondary representation, which is the brain’s ability to hold an image of the world that contradicts direct sensory information. That is, what is being seen or heard. Until now, it was debated whether this ability emerged with modern human language, but Kanzi’s results suggest that this “spark” of imagination was already present in the common ancestor we share with bonobos and chimpanzees. between 6 and 9 million years ago. This is something that also changes our understanding of childhood play, since when a two-year-old takes a banana and pretends it is a telephone, he is exercising a cognitive muscle that evolution has been refining long before telephones or cultivated bananas existed. Exception or rule. It must be taken into account that these experiments have not been done with just any bonobo, but rather an “enculturated” ape since it has spent its life surrounded by humans and trained in the use of lexigramsmaking it have extraordinary capabilities. This gives rise to some critics, such as comparative psychologist Daniel Povinelli, who usually argue that these results could be the result of intensive training that “humanizes” the ape’s mind, rather than a natural capacity in the wild. Although it is something that the investigation tries to counteract with rigorous controls to ensure that Kanzi was not responding to human clues. Images | Will Rust In Xataka | Humans are evolving live on the Tibetan plateau. And understanding what happens there will be essential in space

We believed that a vegetarian diet guaranteed longevity. In extreme old age, the data says just the opposite

There are many positions in nutrition about what food It is the one that will give us a better old age. One of the positions that you have surely heard is the need to reduce meat consumption to prioritize vegetables for everyone the benefits that they contribute. But now science is pointing out that what works at age 40 may not be ideal at age 90. The change of course. A published study this same year in The American Journal of Clinical Nutrition has shaken the hornet’s nest of gerontology after analyzing thousands of elderly people. The conclusion they have drawn is that among those over 80 years of age, those who consume meat are more likely to become centenarians than strict vegetarians. But before you rush to cancel your salad order, read the fine print: the key is not the meat per sebut weight, fragility and the fight against muscle loss. The data. In order to reach this conclusion, the study analyzed data from a longevity survey in the Chinese population carried out between 1998 and 2018. In total, the researchers followed 5,203 participants who were over 80 years old, classifying them based on omnivores or vegetariansincluding vegans and ovolactovegetarians. The results. Adjusting for age, gender, and baseline health, the study yielded a surprising finding: vegetarian diets were associated with a 25% lower chance of reaching age 100 compared to omnivorous diets. A correlation that was statistically significant mainly in the elderly who were already thin. Thinness. This is a really important point to present one of the nuances of this research. And the advantage of carnivores disappears in people who have a weight within the established normality. Thus, the negative association between being vegetarian and extreme longevity was observed almost exclusively in participants with a BMI lower than 18.5. That is, extreme thinness. This reinforces what is sometimes known in medicine as the “paradox of obesity in old age“. While in youth overweight is a risk factor for almost everything, in extreme old age, having energy reserves and muscle mass is life insurance. This is why the authors of the study emphasize that the consumption of foods of animal origin seems to act as a protective factor against malnutrition and frailty in these vulnerable individuals. Because. The biological explanation that suggests that meat is good in old age is based on the constant fight against degradation. One of these events is the dreaded sarcopeniawhich occurs when the natural loss of muscle mass accelerates over time. One of the objectives here, as we have repeated many times, is to maintain muscle with highly bioavailable proteins that are in meat, eggs and milk. In addition to this, the study suggests that strict vegetarians, especially thin ones, may not be ingesting enough total calories to maintain their physiology in stressful situations. And it is not crazy now, but previous studies have already pointed out that, although restricting meat reduces mortality in young people and middle adults, this effect was reversed in old age. They don’t cast a shadow. Logically, this study does not negate the many benefits of a plant-based diet for the general population. In fact, there are studies that suggest that for the vast majority of the population the priority continues to be preventing serious chronic diseases such as diabetes. However, this work suggests that nutrition must be dynamic, since the requirement in middle age is not the same as in the last years of life. Images | Simon Godfrey Kile Mickey In Xataka | Being bored is psychologically positive but it has an undesirable consequence on your body: it makes you gain weight.

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