Artificial intelligence and algorithms: pros and cons | DW Documentary (AI documentary)

artificial intelligence is making rapid strides there's talk of a new evolution that could fundamentally change life on our planet artificial intelligence has the potential to revolutionize every aspect of daily life work mobility medicine the economy and communication but will ai really make medicine better and doctors superfluous when will self-driving cars hit our roads will intelligent robots usurp our jobs and are we heading for a dystopia with no privacy and total surveillance what exactly is artificial intelligence and how much can it really do what will change and what will remain pure fantasy to answer these questions we embarked on an exciting journey to meet the scientists working on our future in the us britain germany and china [Music] our first stop silicon valley in california apple google and facebook all have their headquarters here it's the epicenter of the digital revolution the tech industry has changed the face of the san francisco bay area new startup companies launch every day rents have exploded and artificial intelligence is the buzzword a new type of supermarket recently opened its doors here amazon go all you need here is an app hold your mobile phone to the scanner and you're in [Music] as leonardo shows me amazon's new menus and explains that the language assistant alexa can help with the preparation at home i'm under constant surveillance which shelf do i stop at which products am i interested in on the ceiling sensors and cameras intelligent image recognition captures my every move what do i take off the shelf what do i put back and what do i take with me this branch is still in its test phase but amazon plans to open 50 such grocery stores this year alone the end of the sales assistant just walk out no more standing in line no cashiers i feel a bit like a shoplifter as i leave comfort at the cost of privacy my receipt one block away a robot cafe another test lab for the future order by app and touch screen the increasingly ubiquitous tools of trade my first ever cup of coffee served by a robot so this is the taste of the future ai will change our shopping experience but what will happen to employees stanford university is at the forefront of global ai research with an annual budget of 6.5 billion dollars [Music] i want to know how will artificial intelligence change medicine researchers here have developed an artificial intelligence algorithm that can screen x-rays for certain diseases computer scientist pranav rajpurkar shows me how easy it is to use take a picture of an x-ray with your mobile phone upload the image and a few seconds later you get the diagnosis it's a mass and it's saying this thing over here is a possibly cancerous lesion and i can see that right over here okay so it gives you if i may have a look at it now probabilities for pneumonia inaudible edema effusion and that goes bank yeah now how does this work i mean how did you get to the point we started with a large data set of chest x-rays which were released by the nih and these contained x-rays and then also labels of different pathologies and whether they existed in those x-rays so it might say okay here's an image and on this image i have pathology one two and three and we had hundred thousand of these images [Music] so we trained a model that can take in it as an input and x-ray and then output the probability of several different pathologies on this x-ray artificial intelligence is modeled on the human brain a gigantic network of almost 100 billion interconnected neurons put in very simple terms this is how a brain cell works incoming impulses are passed in a domino effect from one neuron to the next the resulting circuit connects the neurons and it is this circuit that artificial intelligence tries to simulate as a digital neural network like our brains the network can learn how to identify tuberculosis for instance first the network needs to be trained or taught x-rays of tuberculosis patients are fed to the system initially it struggles to correctly identify the condition but every time an x-ray is fed in the network's structure is adapted and its diagnostic ability improves it takes thousands and thousands of clinical data sets to train the machine only after the network is optimized in this way can it correctly identify an unknown x-ray [Music] but how accurate is artificial intelligence compared to a doctor's expertise we have actually done this test twice at this point once with a set of studies from the nih data set that we had a group of radiologists label and then we compared the accuracy of the model to the radiologist and we found that they were very similar in terms of accuracy on most pathologies on one of them the model was outperforming the radiologists and on three of them the radiologists were outperforming the model and then we repeated the experiment this time using a data set from stanford which we recently released which is 200 thousand chest x-rays and then we had a similar setup where we had three sub-specialty radiologists these are very uncommon very trained radiologists to decide what the ground truth for a particular set of images was and then we compared general radiologists to the algorithm at the task and found that they had similar levels of performance so these are all stanford radiologists so so they're they're trained they should be good yeah [Music] reading x-rays accurately is a complicated process but artificial intelligence is making fast progress when it comes to identifying or recognizing simple images computers have surpassed human accuracy now if i look at your picture it's always probability so there are cases where the machine is not really sure what what would be sort of a clear decision to say okay this is i don't know pneumonia or something else yeah i think i mean i think it's good to talk in terms of probabilities because probabilities also give a sense of the algorithm the model's uncertainty on that particular problem i think one difficulty with probabilities is that it does make it hard for humans to interpret like what is the probability of 88 versus 92 percent mean in terms of the decision i should make in the clinic and so i think in that sense one of the things that we could experiment with doing in the future is rather than showing probabilities that are so fine-grained maybe we can show things like unlikely or this pathology is likely or this pathology is possible in healthcare artificial intelligence is powering a revolution scientists are using artificial intelligence algorithms to sift through seemingly banal data such as the up and down motion of the steps we take every day they're looking for conspicuous patterns that could serve as early warning signs of disease scientists in the english city of birmingham are working on a revolutionary diagnostic method to date there are no specific tests to detect parkinson's disease making diagnosis difficult ai could change that max little is a mathematician at aston university [Music] very good voice changes can be an early indicator of parkinson's max and his team collected thousands of vocal recordings and fed them to an algorithm they developed which learned to detect differences in voice patterns between people with and without the condition in a lab-based study of the recordings the algorithm was able to correctly identify a parkinson's diagnosis nearly 99 of the time max little's work is an example of the far-reaching changes ai is bringing to the field of medicine it's no longer just doctors who are using artificial intelligence to develop new diagnostic methods but data scientists programmers and mathematicians like max [Music] one example when a person walks sensors in their smartphone register the up and down motion of their gate [Music] but what information can be gleaned from such data if we measured a pattern of someone's walking behavior then someone who's healthy might have we might measure the accelerometer to look like that okay so it's just the sort of movement he would have here yeah the hips going up and down regularly that kind of thing along with their pace but if you looked at somebody with parkinson's disease they may have these small steps like this and they may be irregular or they may have patterns like that or they may even freeze and stop like that so you you can see that there's you know there's a difference there's a difference so you can also now train an algorithm for instance to pick out features like what is the the distance between the time distance between these uh these peaks and it could also do the same with this and it would be able to do that very precisely and by doing so we may be able to measure for instance that here that there's large variability in between these um the advantage of the algorithm really comes when the for instance you might have somebody who who is say who measures a pattern which looks like this and there might just be one small change perhaps that that occurs very very um maybe not like that but sort of you know some uh more variation that's right in the in the sequence of these um in the timing of these these events um even to a professional eye because they don't have the level of precision they may not be able to detect that this is outside of so the normal range of um a variation but of course an algorithm connected to a high precision sensor um we'll you know we'll be able to determine that difference and in this case this person here may in fact have um a precursor symptom of the disease so this would mean that this person with the help of an algorithm could be diagnosed as having parkinson whereas the doctor himself would miss him out that could for the first time make it possible to detect precursor symptoms of parkinson's and enable early intervention but what else does the data on our smartphones reveal right now you have already apps tracking your so-called activity yeah so in fact the data might be already there well the data potentially could be there that's right but there are ethics about whether we collect that kind of data and use it for for these sorts of purposes you know clearly we can't just collect this data and start diagnosing people which sure we should not no absolutely we could but we we really wouldn't want to there are very good reasons not to do it and uh there may be good reasons for doing it as well but that's the kind of thing that needs that needs to be worked through in a uh in a proper you know regulated setting [Music] after our interview max little tells me he's received several lucrative offers to join tech giants who smell new business opportunities he turned them down artificial intelligence will undoubtedly improve doctors abilities to detect and diagnose disease but amid all the opportunities ai offers there's an urgent need for regulation we're on our way to china a country that has experienced breathtaking change in recent years [Music] its capital beijing is buzzing the whole country is hungry for progress and is on a fast track to the future [Music] time seems to move faster here by the year 2030 china aims to be the global leader in the field of artificial intelligence and there's a lot to indicate it will meet that goal because the government has bankrolled subsidy programs worth billions of euros [Music] these robots aren't assembling cars they're the big attraction in beijing's latest smart restaurant ai in the kitchen and automated waiters i have a meeting here with the design researcher geisha yost a former internet ambassador for the german government she's currently spending a research semester at tongji university in shanghai i asked her about her impressions of china [Music] there's this real hunger in the city and it's super fun to talk to young people because they want to be the motors of change they work day and night they have a new work-life balance model it's called 996.

i thought what do you mean 996. and they said we work from 9am to 9pm six days a week that's the better model now because they used to just work non-stop but no one's stopping no one's hitting the brakes they work like crazy because they want to bring about change as a this restaurant cost 20 million dollars just the one restaurant they've invested this huge sum to digitize the entire operation they aren't just robots serving the food the whole kitchen is digitized refrigeration is monitored supply chains are monitored there are dashboards for everything everything is connected here where they're testing what works and which aspects can be implemented in other restaurants of this chain that's the idea here to just try things and to think big [Music] think [Music] but what about privacy there seem to be a trade-off between security and privacy you often hear how ai has increased public safety for instance that the ubiquitous surveillance cameras have dramatically increased the crime solving rate it's hard for us to relate to because privacy and personal rights are so important for germans but here there's a different tradition and take on the issue i'm fascinated by china but it also puzzles me how can they be reconciled the high civilization of ancient china and the modern industrial state with surveillance cameras everywhere [Music] the long gan district in shenzhen in the heart of china's booming economic region north of hong kong we visit the smart city control center a giant monitor displays the data of the entire district in real time numbers of new residents by neighborhood to plan schools water supply levels power outages all this information is collected compiled and evaluated using artificial intelligence the showcase project was developed with chinese tech giant huawei chief engineer chen bangtai tells me the city now operates more efficiently so what you're doing here is urban planning yes the systems are a big help these are hospital beds right now there are 15 000 doctors and nurses and 7 600 beds so is shenzhen currently healthy or sick [Music] a smart surveillance system scans the entire city illegal structures like this one on a roof are quickly identified and demolished to me some of this feels like the backdrop to a science fiction movie employees with live streaming body cams inspect side streets this is total surveillance chan shows me how cameras installed in restaurant kitchens even keep tabs on cleanliness but doesn't the chef mind being monitored all the time chen says residents of long gang district approve jaywalking is not allowed and offenders are immediately identified look here you jaywalk once and right away your social credit score drops this degree of surveillance is unthinkable in the west but here in china they take a different view and say it's driven a drop in crime what does it say here male youth without glasses youth yes suddenly you're a youth [Music] a transparent society in the interest of efficiency some of this appears useful but do we really want to measure control and analyze everything just because it's technically possible won't that inevitably lead us down a road to data dictatorship maybe trust is better than smart control [Music] silicon valley a synonym for innovation and unlimited freedom the biggest players in the field of ai are based here but their headquarters are hidden behind inconspicuous low-rise buildings facebook we use their services entrust them with our data but the company is impervious to the public a selfie at the entrance gate is just about tolerated [Music] next door at apple the visitor center's 3d model of the campus is as close as non-employees can get to the new building what's going on inside [Music] it's all confidential [Music] we want to visit google here in california and requested an interview weeks before our arrival but all we get are stalling tactics like these visitors google leaves us out in the cold apart from a small store this is the only visitor highlight accessible to the public these android lawn statues are even a designated location on google maps [Applause] welcome to google google [Music] the european union handing google a 2.7 billion dollar anti-trust fine these companies command growing power over our daily lives and growing political influence google spends more than 6 million euros a year lobbying brussels alone the eu's transparency register lists more than 200 meetings with google representatives since 2014.

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google is the busiest lobbyist in brussels [Music] we finally get our interview not in california but in munich germany with one of the longest serving employees jens redma how important is ai for google ai is so important to us that two years ago we rebranded our entire research division to google ai ai drives a significant part of our product development ai above all drives a significant part of our efforts to improve the quality of our products take machine translation through the use of machine algorithms we've seen faster progress over the last two years than we did over the entire previous decade society will undoubtedly be propelled forward by the implementation of these services and the use of ai in the years to come what's key is that it's done responsibly under the principles of transparency we need to explain how things work why they are needed where people's data goes how they can control it how they can delete it if they want to delete it or forward it the user must have control but what about technologies like google home the smart microphone sitting in people's living rooms google home isn't eavesdropping there's a small chip on the device that listens out for the so-called hot word it's waiting for the command ok google or hey google and only then is the microphone switched on to send a voice command or search request to the internet the google server it then presents the results so as a science reporter i'm naturally curious about the future there's this patent application from september 2016.

google's application gives a detailed account of what can be deduced from household noises how long we brush our teeth whether we argue or whether a housemate is ill it's much more about capturing atmosphere and habits than words and it's a google patent application that anyone can look up i don't know anything about this particular patent application we have a whole series of patent applications every year most of them are imaginary fictitious services which like in many other companies are never translated into real services [Music] services google's eu lobbying activities at least are unarguably real [Music] how much does google intervene in the eu i think the more important question is the one that lies between the lines namely how ethically does a company deal with product development and we have set our own rules according to principles that guide our own actions research and product development that also guides our business decisions on its home turf in the united states google is facing mounting political pressure in washington we meet barry lynn head of the think tank open market institute he warns of the dangers posed by tech giants influence we need to know in our society that the people who bring information to the public sphere who talk to the press who talk to the rep our representatives uh in congress that they represent their own selves that they're speaking in their own name and not for someone else that they're not stooges that they're not puppets and the fact is today our society this is true here in washington is true in europe our society is filled with puppets with stooges who represent the interests of google and facebook and amazon given big tech's monopoly power calls for regulation are growing louder in washington when you have a monopoly whether it's over retail whether it's over search then it means that the the public doesn't actually have the ability to understand how that information is being used how that power is being used monopoly per se unless it is regulated closely by the public is a danger google means to take over the world they mean to direct our thoughts between person and person our communications between person and person our dealings and business between person and corporation they mean to direct everything that they can they want to know what's going on in our thermostats and our houses they want to know what we're watching on tv they are at a level of hubris that even the the stalinists could never have imagined uh uh pushing for google facebook amazon will the influence of tech giants continue to grow what can be done to rein in their monopolies one thing is clear artificial intelligence is consolidating their grip on power there's an urgent need to rethink anti-trust policy [Music] mobility is another area in which ai is powering the march of innovation in the near future it could put self-driving cars on city roads but how realistic is this vision we've come to boston to the prestigious massachusetts institute of technology certus caraman is a leading expert in the field of self-driving cars he and his team are working on prototype autonomous vehicles i think that we've nailed a couple items with computers and machines one is all of this mapping and localization all that technology works super well computers can know where they are within centimeter maybe sometimes with a millimeter precision way more than what is required to drive computers are not able to look around and understand where everybody else's but that's not that's not what's required for driving what's really required is to understand what's going to happen next in the next three seconds five seconds next minutes maybe even sometimes next hour and so that's the key missing piece and i think the problem there is that right now it's very hard for you to describe to me how you understand whether or not a person is going to use the sidewalk or is going to use the crosswalk and cross the street sometimes you look at the face of a person and that facial impression gives them away and you will slow down sometimes not they may be looking at the same direction they may be standing in the same location it's just a little face impression maybe just the way they stand and unfortunately that kind of intuition gut feeling and so on is very hard for us to program into the computers [Music] it works in a simple lab environment but in real life settings the algorithms are still totally out of their depth not that that bothers advertisers our test drives were nothing but a series of glitches an inexplicable emergency stop and another one on the second attempt the sensors on this vehicle were over taxed by a car parked on the curb and here this smart car overlooked a car veering into our lane well that didn't work talking to the mit engineers it becomes clear that to build a self-driving car developers need to meet a massive scale of technical requirements what i think about fully autonomous cars is that i think i would be very surprised if it happens in less than 10 years also i will be very surprised i'm a big believer i'd be very surprised if it doesn't happen in 20 30 years i think it will happen at some point but i do think that people really underestimate the kind of technology required to be built to make your car fully autonomous under every condition every circumstance every whatsoever that's the very hard part [Music] [Applause] ultra fun driving is not as trivial a process as you might think and that's because you constantly have to watch what's going on around you cyclists pedestrians sometimes you have to second guess does this guy want to cross the road or not it's hard to imagine all that being calculated automatically [Music] [Music] a self-driving vehicle would have to be able to deal with all of this too here we have a truck doing a three-point turn i may have to back up now if he doesn't make it [Music] does she want to cross the road or not some people don't even wait [Music] the fully autonomous car is a distant dream but driver assistance systems are already making our roads safer an accident filmed from a car equipped with emergency brake assist the sequence of events can be assessed in slow motion the red vehicle ahead overlooks the upcoming traffic jam no brake lights appear but the distance sensor in this car registers the jam breaks and prevents a further collision but which principles should guide decisions made by technology in an accident situation in recent years mit's media lab has been addressing the ethical questions raised by artificial intelligence what moral compass should future smart devices refer to [Music] is one of the world's leading experts on such issues he and his team developed a survey called the moral machine to explore ethics for programming autonomous vehicles like in the event of an accident most of the time people don't remember anything and people have no time to react everything happens very quickly so they just are surprised maybe they see something in front of them and they just swerve in some random direction or maybe they just freak out and press the brakes so you cannot expect a human being to do the right thing in that small exactly in that in such a small time scale unless you know they they made a decision beforehand like you know did they drink and drive or did they know that they were going to cross a red light then you blame them but otherwise you can't really blame the human but with a machine because of the speed of the electronics because the autonomous car is evaluating the environment you know millions of times per second then time goes much slower for the machine and it's able to recalculate the situation and maybe recalculate the strategy and this is where we can make a potentially better judgment than the whatever random choice the human used to make in this situation now what is better though is a very interesting question and it's not obvious and let's see a case where we have people versus people so now we have um the vehicle has two people inside of it okay and um it's going to either swerve and hit the barrier so the people will die in the car or the car will go straight and kill the pedestrians the pedestrians who are crossing illegally but they're also women and and these uh the people in the car are males so now it gets very complicated very quickly should you prioritize women over men or should everybody be the same should you prioritize pedestrian over passenger or not should you take into account the fact that people are crossing illegally in this case so as you can see once you have multiple dimensions it becomes not obvious what the right thing to do is a or b who should die the elderly lady crossing on red or the child in the self-driving car what choice should the algorithm make ead's online survey presents respondents with various scenarios each with its own unique dilemma respondents are then asked to choose how they would want an algorithm to decide so as a result we have 40 million decisions and they're still counting from people all over the world and it enables us to start analyzing what do people agree on but also how do they differ [Music] so does our culture influence our moral judgments people always agree on saving more lives saving children saving people who cross legally over people who don't cross legally and so on the most interesting part is you could pick a country like germany yes and you could see how they compared to the global average you could see ah okay so the status is not really important but what you can see in germany is preferring in action yeah so if you don't have to if you prefer to just go straight yes which is the default don't take a decision exactly this means germans don't like to take a decision yes germans don't like other people you say close your eyes and and go and just go so so this means in other words you can see a bit the acceptance of technology taking a decision and the more you say inaction means a comparison of germany and france reveals cultural differences the french tend to favor sparing women and there's a stronger focus on children and contrary to germans the french don't want to leave things to fate they want the machine to make the decision the machine is kind of a mirror for the first time something that you did subconsciously or maybe instinctively in the case of an accident you know you just act randomly now you have to make a conscious choice and the machine is forcing you to make a choice right you cannot you cannot hand wave it because in the end you have to program something driverless cars aren't yet ready for the road and ethical questions still abound artificial intelligence harbors immense potential to benefit daily life medicine or mobility but we also need to look beyond the technical possibilities what aim does such progress serve it's a question artificial intelligence algorithms can't answer only humankind can do that [Music] you

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