T more people than ever on the move worldwide in such a kind of one. Great timing is very, very difficult to find out about time on storing info. My grands the we just keep getting smarter and smarter. Somehow it felt good to hear that. And it was true. For some time, our measured intelligence was increasing year after year, decade after decade. But doesnt everything eventually come to an end the vs were getting worse in some functional areas, flesh talking between we havent been treating our brains ultimately for years now. It seems our upward trajectory just couldnt last forever. Is it possible that weve simply reached our peak . We owe, indeed, getting stupid, older generations have always said, but young folk were not as smart as they were. Well, what if thats coming to the lift storage here . Stupidity is not measurable. That gives me that intelligence is that theres a classic intelligence test question here. Minus 3 plus 2 minus 3 plus 2 minus 3. Thats 5, right . Just by 5. People within that for a number of sequences. Rack up points on intelligence tests. But that ability is by no means you need to humans you think . And wed like to think were the crown of creation with our having become super intelligent golden science. Go from the initial guess id we shouldnt lose sight of the fact that in the course of all that pollution we dont even make up a blink of an eye. So announcement when taking certain tests we fair worse than chimpanzees. For example, one comes on this goes to show just total limited are working memory is by on right now, the human can barely managed to remember more than 3 numbers in the correct position and sequence in the short amount of time. And for that, so a know so you, this young chimpanzee does it with instinctive certainty. So chimpanzees can beat us and the numbers test, and yet were developing highly complex technologies that doesnt seem to add up a minus the 2 are connected. What if were losing our brain capacity cause of our intentions . Who drives anywhere without a Navigation System or memorizes phone numbers these days . Is Artificial Intelligence doing too much of the thinking forms to determine whether homo sapiens are truly in a down swing . First, we have to define the basics. What is intelligence anyway . Yeah. Intelligence intelligence is the ability to think logically and to reason. I think its all got to do with some cognitive reserve. Lot of thinking outside the box on energy does. It comes down to our brains capacity to solve problems here, and thats whats measured on intelligence tests and against test fax. The 2nd symbol, academic definition of intelligence, namely how high you score an i q test and an intelligence test. And why i mentioned against test option. The 1st modern intelligence test was developed by french psychologist, else itd be ne, in 19 o 4. The intention wasnt to identify the brightest students. Rather, the ones falling behind as cop conduct a clip of children who didnt learn to read rice. Im do mathematics in the time it was supposed to take no matter how, how the teachers tried on focusing on going to all intelligence tests. What was the developed to determine who needed special education officials during the 1st world war, the us military use the test to find qualified officers. But there were also more sinister uses. Intelligence tests were intended to read out supposedly weak genes. Denazis term for it was racial hygiene, ty advisors in some cases when intelligence tests were administered to people from traditional cultures in africa, they couldnt do them simply because they have never before seen a circle or a square like that and use a phone to feet high and then they were deemed unintelligent. Is guys. Today, universities and private high schools use intelligence tests to screen applicants in criminal proceedings. A very low i q can have a mitigating effect for sentencing tests are also used in psychotherapy with children and adolescents, for example, to indicate developmental potential tones. What sound is to music . Not all intelligence tests are just about numbers to the language. So see yeah. Thoughts as a sound is to music as word is to language the all the questions can be linguistic and nature. For example, you asked to evaluate the similarity between words couldnt take him to numerical questions and theyre also sick girl exercises of golf and the missing ok to good 5 it. There are objects that have to be folded or rotated mental exercises and sizes. And these are all activities that essentially try to split our thinking into adams ones, the ones that didnt come into a tool to split tests like these boil intelligence down to a single numerical value, the intelligence quotient, or i q, intelligence, it seems is measurable. But those criticism couldnt be decent test. This test cant be used to measure other aptitude that are also extremely important for i thought it was such as social skills, emotional competencies for, for example, orienting yourself in the steps in the industry step uh, the 1st im include take one criticism with sensors on the compatibility of different cultures to critique or another critique is that it doesnt measure a very important aspect, which is finding a new solution in a new situation, or what we call creativity of could actually take the in the end, it comes down to how we define intelligence in science, im in favor of defining the things that you can define not only been monday if you can isolate cognitive intelligence, which you can finish and load the concept of intelligence with things that dont belong to it. The dispute like thats what we want. Lets focus on cognitive intelligence, which is by and large i q test to measure. Interestingly, its distributed in a population in the same way as heights. For example, somebody or normal distribution means measured batteries are spread out like this. There are a loss in the middle and fewer at the extremes. Its also called the bulk of an i q score of 130. 00 or higher is considered highly gifted. Below 70 is considered learning disabled. These extremes account for 2 percent of the population. The how have these scores changed over time . This researchers spent his life studying data to answer that question. James flynn. He collected and evaluated millions of i. Q test results from dozens of countries recorded over decades. In 1984, he concluded that humans are getting smarter theyre coming to, you deserve that starting after 1913 i. Q scores increased by 4 points every 10 years, perhaps, as described as the twin effect, types of them on screen effect. The plan, in fact, based on i q scores, he noted an average li, intelligent person from 1984 would have been considered highly gifted around 1900 homeless ascending. Why does it rise in the 1st place just to mention it sickly . People havent changed from quite new smartness. Genes have come along the last those under 10000 years on seen 1000 job and so become what happened to make the scores climb within just a few decades of we have better nutrition, better medical care, we have more widespread education, but we have to keep in mind that education is really only evolved like this in the last 60 years. The said 5 about the lease in time with learning to read and rise and do mathematics in a rather challenging way. So thats what led to develop your intellectual potential for an in 5 can con, education, nutrition and medicine have all played a part in making people smarter. But theres another factor. Our working world. In the early 20th century, nearly half of the labor force in developed countries worked in agriculture. They did physical labor. There was no need to engage an abstract thinking. Intelligence researchers asked farmers for example, what fission crows have in common. Non farmers might answer for both animals, but the farmers answered nothing. I can eat a fish, but not a crow. They related everything to their Living Environment and didnt really abstract beyond that. Over the course of the 20th century, our every day environments became one that prompted us to think more in hypotheticals. Many people no longer fished and instead became more scared with numbers and letters. More people live in cities with more complex social dynamics and more technical applications. That means our brains are also more challenged for one coincide. And if im, when our brains are more challenged in our child who didnt have the lessons, they make nor connections. How many times we have more senses, which is what amounts to our brains, computational power, once you take the skills all small. And we also know that brains that are used more work faster thats in. So mankind in general was soaring to ever Greater Heights of intelligence. I q tests have to be, be calibrated every few years. But in 2004 Norwegian Research has discovered the slim effect no longer held. In fact, i q scores have been dropping slightly since the mid 19 ninetys. That was quite a shock since then, researchers have been trying to find out why and there is no easy explanation. In fact, many attempts to rationalize that are problem attic and hotly debated within societies. In 2016 german psychologist kind of and im on survey the International Research community on the causes of decreasing i q scores. Some researchers suggested that less educated immigrants might be dragging down average i q scores. Authors speculated that more intelligent people are likely to have fewer children than less intelligent people. Such hypotheses were reminiscent of the nazis theory of bad genes. When you months out of students rise on my exam, that 80 percent of intelligence is hereditary and 20 percent as environmental that going to klein buttons when kids of one well assume that thousands of teen variations distributed over the entire genome contribute to a persons essential intelligence a person is also had a good chance to develop his or her intent. Attendance in one stop. And of course, that depends a little bit on heredity because what you get from your parents is a source of loss, right . Funds on is on college and people come in 2018. A norwegian. Studies show that migration does not play a decisive role in following. I qs because scores are also declining within families. For example, between father and son or older and younger sibling. Other studies have shown that heredity is not to blame for our decreasing average intelligence. So what can be causing it . I think chemical pollution is the main fact that we have data from the United Nations showing that a chemical production has increased 300 fold since the 1970s. We find them everywhere in the soil, in the water, in the food we eat in the air, we breathe, especially plastic wrappings and things like that, cause metrics. I never went cause much fix with the serious that ended couldnt disrupt her chemicals in certain products interfere with our hormonal balance. Theyre linked to the reasons why more and more people are getting diseases like cancer and diabetes. But the thyroid gland is especially affected. And theres both epidemiological and Experimental Evidence to show that firewood hormones, this is necessary for brain development. And without firewood hormones, you have a less efficient brain. So not only are we running our planet into the ground, were bringing our intelligence down with it. There are so many tammy Cool Solutions that are increasing, you know, mercury, which is found in fish to fluoride plastics, bpa, etc. So the, the increases exponential, the harm fullness of india chron. Disrupters is undisputed, but whats less clear is how much of an impact we have on our intelligence. Clock is the ticket continues because these things could greatly impair our intelligence is real. But whether they really affect middle class people who live in a healthy environment, whether they have that strong of an impact as another question of, of august, euros science puts forward another theory for declining i. Q scores. Isnt until we know from psychological experiment its been, humans can process about 11 to 60 bits per 2nd and con spot 11000000 bits are flooding our brains every 2nd. But its not as if in the past, our brains were able to process more stimuli, either. Why are we only getting dumber now . Doesnt the full name door to consult . Thats the problem of the modern a g items. We have a definite linear increase of interesting information spreading across our online world and explanation to an object. But we have an exponential increase in bold, and bo is the problem in the veins. And this man dialogue is if youre no longer able to focus on certain stimuli because youve trained yourself out of that ability by the fee cuts. Youre not going to be able to complete these types of exercises. Unintelligence tests effectively against test of gum, if you tend to. But thats how this is being substantiated in a number of different studies. And it was almost an especially convincing one was done at stanford with stanford students for some of the Top Performing students in the united states. And that was on the 500. 00 students were divided into 3 groups for an intelligence test. The 1st heather smartphones taken away, the 2nd were simply told to turn them off, and the 3rd were allowed to have them on. The 3rd group perform the worst, and even the group with their cell phones turned off, did significantly worse than the group that didnt have them in the room. So were getting dumber because were too distracted by new media. But isnt that an angel narrative that new technologies are doing us harm . Even when writing was invented, people feared that memory would suffer because we end up writing everything down. But where would we be without our inventions, thoughts i shall mention for as long as weve been making technical inventions and people have been trying to source certain tasks for the 1st. We try to make the field work easier for ourselves and come to the end printing came along so we no longer had to copy out every bit of either. And no, we no longer have to knew how to navigate from a to b, because instead we can be guided on under criminals online. And also your mission, all going to you, our special orientation skills are getting much worse because we dont need them anymore. As we have all kinds of navigation apps on the iphone, even if our spatial orientation is getting worse, is it really harming our brains to use Navigation Systems or Search Engines . Then goodness, to think monday for uses and things repeatedly at some points. Connections in the brain tend to loosen up until color and learning is little about making connections between stimuli and responses that for once the before lights, im going to say up to one point in this plan is that why stimulus triggers another that so theres some behavior triggers near stimuli that is what defines learning. And then if we stop doing that, it gets low. It does tend to, okay, so we lose the point or 2 on an i q test. Isnt that just the result of us adapting to our environment . With the intention of electricity, our fire and making skills fell by the wayside. Whats the problem . Were freeing up our capacity to make room for new things. The top session is just the so people tend to think its great that theres less children and young people need to know. Youre going to see a few minutes a trade off. And they can be more creative and innovative because they can fill up their brings hard drive differently from them. And this is a fundamental error in thinking about new or biology because we dont have a hard drive in our heads noise nannan. When we learn something new, the brains hardware and software change. That means functionally, the nerve cells interconnections change. But the brain also changes structurally. And so we all proceed the world very differently. For example, if you walk through the countryside with someone who studies thoughts and youll recognize farmer grasses and trees and the links between them that someone have a good feeling. Switching, dean of human data from the shop to the highest of them. So the decisive argument for why we still need to know a lot is that when we do, we perceive the world in far greater nuances in thing we think and go about life and more sophisticated ways when we have more knowledge. And by the way, it actually helps us use Search Engines because we can ask more precise questions. It seems a hardened and here we thought we finally moved away from memorization and destroyed. See if i were a gym and teacher, my students would have to read 6 books. Theres not a single picture, and so they wouldnt lose that skill for each type. Even the final one, keith, if i were to geography teacher, id say its great emphasis on reading maps, not cognitive and so, but as i think its still important in our day and age and ill be good. So that even though we have navigation devices, the guess is from a to b, we have a general understanding of how the world is structured is what constitutes that are what countries there are thinking and how they relate to each other geographically. So that sounds and um and then we can learn to use navigation devices on top of that. So whats the system this and its a bit like the pocket calculator, which weve done right to the Council Junior by the 7th grade. Everyone has to understand the number range fall in the home to including the skate image. So thats not going back to the days of sleep, visually memorizing things just so we knew them by heart, tell them its about planting seeds of knowledge and our brains that we can use to piece together the world with our eyes wide open, often and all this the very to include chief is speech, the depth is more important. Then bradley, with lizzie, now we listen to music. Thats the shortest 2 minutes you go to all of us. I think the average listening time on spotify is one and a half minutes. 2 sentences in text, we read hardly have any relative clauses anymore. Theyre getting shorter and shorter. The vocabulary we use is shrinking. Its all too fast. We need to go into more depth. But how do we do that . We can turn back time. It would likely end up a balancing act, integrating new technology in a way that lets us hold on to certain skills the, as i said, because tests and car for me, its crucial that we improve our self discipline based on essentially, we need to get the juices flowing in our frontal cortex, which is responsible for all these skills, more often than we currently do. Hi siegel as we as the so i to who wouldnt want to have their frontal cortex and talk for him. It sounds a bit theoretical, but there are actually exercises for it. Tell me not so hard either. Thats concept. Thats what we train our ability to concentrate when we meditate. For example, it can be something simple, 10 minutes and easily incorporated into our daily routine. Thats the last set, an alarm for 5 minutes, and then try to shut out everything in the outside world or listen to close your eyes and just observe whats going on. And my body forces comes one head slugs through. Can i feel my