coming in, which means cloud front coming in, which means cloud and rain later in the day and a lot fresher. but highs may peak at 25 in the south—east and east anglia. this is bbc news. the headlines. swedish police believe the man they have arrested — a 39—year—old from uzbekistan — is the driver who carried out yesterday's fatal attack in stockholm. they said they'd found a suspect device in the lorry but wouldn't confirm if it was a bomb. the foreign secretary has called off a visit to moscow in the wake of the syrian chemical weapons attack. borisjohnson said he deplored russia's continued defence of the assad regime. hertfordshire fire service confirms to maggie but had been tied and 33 rescued after a fire at a care home. extra trains will be laid on to deal with any possible disruption to services on grand national day because of a strike. rail workers are staging a 2k hour stoppage because of disputes about staffing and driver—only

trains. i'll be back with more at lipm. now on bbc news it's time for click. this week: destressing with a future ball. knocking up google. and shouting at amazon. tell me, who is the murderer! robot voice: welcome home, spen. how was your day? awful. i'm stressed out. that's a shame. i will run you a bath and play you some relaxing music

from your anger— management playlist. music plays. rory, do i have any messages? you 17,000 tweets, 16 e—mails, and 105 fake news updates. anything of them urgent? your boss sent an e—mail asking if he can stop by for dinner tonight. do we have anything to eat? there is a quinoa, sapphire, and ginger scallop bake in the fridge which feeds four. i'm setting the oven to come on now and ordered a bottle of his favourite wine to be delivered at seven. and order some chocolate double—fudge cake. ok, i've ordered it. should i apply for a gym membership for you? rory, mute. now, one day we really will have artificially intelligent personal assistants that we can talk to and who know us better than we know ourselves, like pretend rory. thank you, rory.

you're welcome. mr rory cellan—jones, everybody. now, we're not there yet, but we are well on the way. what started in our phones with names like siri, cortana, and, uh, "ok, google," can now control our homes and our cars too. amazon's echo led the way. and this week, google‘s home is launched in the uk. now, it is all well having these intelligent personal assistants to which we can ask anything into their permanently open ears, but the more we use them, the more trust we are going to have to place in them. ok, google, is obama planning a coup? according to "secrets of the fed..." for example, in his dayjob, the bbc‘s tech correspondent, rory cj, recently discovered that you can't always believe what they say. obama may in fact be planning a communist coup at the end of his term in 2016. that fake news storyjust happened to be the top search result for that question.

well, dan simmons has been looking at some of the other unintended consequences of living with these devices. as we transition from controlling things through screens to using our voice, for those providing services, things could start getting tricky. i'm in the bbc‘s blue room, a space where the broadcaster tests out new technology. and with voice—assistance, it's not all going smoothly. alexa, when‘s the next train to manchester? sorry, i didn't understand the question i heard. if you have to find out when the next train to manchester is, right now you have to say, "open the national rail app, tell me when the next train to manchester is," and go through a number of steps to achieve that. that's just not natural. you have to remember a lot of steps to find out content

from somebody else. for the default service provider, it's very simple. "play me a song," it'll be provided by a certain provider. "tell me the news," it'll be provided from a certain provider. and that's a great thing for those, for everyone else, it's very critical. a lot of work needs to be done to level the playing field. and that disadvantage applies to search results too. up until now, websites aimed to be on the first page of results. with voice assistants, just one answer comes back. ok, google, how far‘s the moon? fine if it's a right—wrong definitive answer, the ones that companies constantly demo. the moon is 384,400 kilometres from earth. more controversial if you are seeking a product or service. for anyone else, how did you get to that position? only one person can have the first spot. everyone else will have to figure out what did they do, how do they work with amazons and googles to make sure their content and their

results appear first. bell chimes this is not the end of the world, it isjust the end of competition as we know it. oxford university is home to one of the world's most influential thinkers when it comes to competition. if we use our assistants to buy stuff, ariel believes there'll be consequences, and they won't be unintended ones. that shift from an online environment to the digital helper, what is it that you have? you have a helper that is voice—activated, you are one step further from the ability to look for outside options. your ability to check whether the price you received is truly the best price. you tell your helper, "order me one, two, three," and you just assume that the helper will serve your needs. the likelihood is that in a two—side market, the helper is actually serving the platform. today, your assumption, our default assumption, is that the price you receive

is the competitive price. and you're suggesting that it won't be? i'm telling you that it's not. a walk down oxford's cornmarket street reveals something the professor believes won't be around much longer on line. around much longer online. can i ask you how much this is, for example? how much are we selling this fortoday? they are £5, sir. now, this gentleman over here, hello, sir, hello, how much would you sell this to him, and how much would you sell this to me? you just met us in the street. one price for everyone. one price for everyone? of course. that sign says so there. absolutely. but do you think that i would maybe pay a bit more? no. uhh, no, to be honest with you, lately, tourists buy more from me. tourists buy more? yeah, than the locals. so, you think he may buy more than me? yes, unfortunately. for the seller, it's one price for everyone, but the professor says our digital assistants will get to know us so well, they'll recommend purchases with prices tailored to us too,

effectively becoming a gatekeeper to the best deals. i went to see one of those gatekeepers, google, and asked them if sellers could buy their way to the top result and get recommended by their digital assistant. we really want to make sure that the consumer experienceis the main focus for what we do. doing something like that will not help them find what they actually want. so we want to make sure we are focused on what they want. amazon told us "there is lots of potential and room for many participants. ourjob is to innovate on behalf of the customer and then let customers decide." but perhaps what these home assistants are most useful for is what they are becoming best known for, and that's controlling other things around the house. alexa, turn on the bar lights. 0k. alexa, bar lights off.

0k. phone rings hi. dan, are you there? look, i know we have not seen each other, and you think i am crazy, but i wasjust passing by, and... oh, wait, have you still got that stupid voice control thing, what was it? alexa. turn on the bar lights. 0k. hmm. alexa, turn on the microwave. have i got your attention now? alexa, unlock the front door. 0k.

it's only me. we set that up. but the lights were real, even though the oven and the front door was faked a little bit by us to just show you what the potential is of this technology if it cannot recognise your voice. in actual fact, amazon tell us the unlock feature for doors is not enabled on the echo, and that may be the biggest admission there is that there is still some work to be done with security on these devices. welcome to the week in tech. it was the week that apple ackowledged its latest laptop, the macbook pro, was a bad design. a chinese man married the robot he built himself. and blizzard, the developer behind multi—player, overwatch, successfully sued a cheatmaker $8.6 million for a00,818 counts of copyright infringement. but graphine stole

the show this week. a uk—based team announced they've created a graphine sieve that can remove salt form seawater. this could eventually provide millions of people clean drinking water. amazon chief, jeff bezos, says he's been selling a billion dollars' worth of shares a year to fund blue origin, his tourist space project. the company hopes to send travellers into space in the next two years. in massachusetts, a robotic arm picks up random objects and puts them on a conveyor belt all day. it then shares its wisdom with other bots so they can learn the skills too. it could be how warehouses are run in the future. but work chat must be dull. and a man flew with a home—made suit developed in his garage over the last six months. it has six jet engines mounted on the arms and back, and can fly hundreds of miles per hour, apparently. although richard is exercising restraint, he said, for now. amazon echo, google home, maybe one day even "rory."

it certainly looks like the rise of the digital assistants is upon us. now, all of these assistants are trying to be wide ranging all—purpose artificial intelligences. the technical term is "horizontal ai." but that's really hard. in order to cover a lot of subjects and perform a lot of tasks, these things have to understand a whole lot of things. take this example, rory, tell stephen i will call him in the office after my train journey tomorrow. first it works out what i said. then it pulls out the important words. then comes the reasoning and context. it needs to scan my calendar, myjourney times and my train timetable and guess is that stephen is the stephen in the office, not stephen the friend, or stephen the other stephen.

and then the right action needs to be performed, in this case schedule the call with stephen at 10:20 and let him know. the question is, are these horizontal ais best placed to do that? or should we maybe instead be talking to a number of specialist "vertical ais" that do one job really, really well. well, one company that thinks that is x.ai, and we scheduled a call with its boss through his secretary, andrew. now, we had several e—mail exchanges with andrew, and it was only after about five messages that we worked out that andrew is actually an artificial intelligence, a specialist ai that only schedules meetings. and i have to say, it interpreted our written questions and requests to change the meeting times pretty well. and sure enough, on—line is the man who invented andrew a couple of years ago. dennis, congratulations, you fooled us with andrew. will we have any general assistants in the future or many vertical ones?

well, we imagine this will play in the short—term future where central ais, think siri, alexa, cortana, so on, they will answer simple questions, but they will also enable us to talk to a set of vertical ais which are specialised in doing one job really well. and i think what's going to happen here is you will have a whole plethora of vertical ais on your payroll, so that you will have siri or cortana being your best friend, and they will be aware that we will have 13 agents on payroll to dojobs you don't want to do. there is a whole app store for this with differentjobs to mine because you have different needs. it will be the same

with intelligent agents. you will have different needs. thank you for your time. send our love to andrew. yes, of course. meanwhile, in san francisco, dave has been living an incredibly smart life. set the temperature to 72 degrees. setting living room temperature to 72 degrees... cubic.ai bills itself as something of a digital butler — a faithful servant around your home. its voice control comes from an android app, and they're particularly proud of the way it understands the context of what you're you are saying. turn the lights on in the living room. turning light on in the living room. make it red. setting colour to red in the living room. typically, when you have different devices from different brands and manufacturers, you will a bunch of apps for every device,

and it's really inconvenient tojump around and switch from one app to another. the app integrates with popular smart—home devices like the nest thermostat and cameras, as well as the philips hue lightbulbs. but like most smart home assistants, the commands are still pretty basic. in the future, we will add scenes, and when you wake up in the morning, you can sayjust "good morning," the temperature will be comfortable for you and the lights will be on in certain areas. these home assistants are still quite temperamental, a little bit buggy and frustrating at times. but they are getting there, and starting to feel quite useful. the next challenge is to take those assistants outside of the home. ford recently opened this silicon valley research centre, and one of its main projects is to integrate smart assistance into its latest cars. the company has been working with amazon to building the alexa assistant. from your home, or in our case, the lobby in ford's building, you can find out important

information about your car. alexa, ask my ford mobile for my tyre pressure. your vehicle's tyre pressure is not currently showing any warnings. that's handy, but where it gets really useful is when you can use it to control your car itself. if you've ever had to sit in a freezing vehicle as it warms up in the morning, you might appreciate this. ask my ford to start my car. ok, say your pin. oh, what's my pin? five, six, seven, eight. sending start command to your car. so the car's just outside, so hopefully... i mean, it's not quite the roar of the engine, but it's surely the coolest you can do with this technology right now. out on the road, the assistant steps in to make typical in—car functions a bit more hands—free.

so i tap here? yeah, tap it there. alexa, continue reading my audio book. i'm here to show you how you can... ok, so i can pick up where i was at home. alexa, find the nearest coffee shop. here are a few nearby popular ones: patriot brew, vmware hilltop bistro, the... the integration is fun, but far from perfect — alexa still suffers from the same problem that many assistants have: rather than talking naturally to it, you find yourself having to think about what phrase will unlock the information you need. when you're trying to drive, that feels like it could quite distracting. so alexa is a really natural language detection system, so it does understand the way — what you say, independent of how you say it. ijust wonder if people will be thinking about alexa's thinking, rather than what's straight ahead of them on the road. and so of course, as a driver, we always want to make driving safer, so you should always keep your hands on the steering wheel, eyes on the road, and be safe while you're driving. and then for your infotainment, and entertainment on the road,

you could use your voice, which is really the safest way to interact with the car, in general. games looked a bit different in the early ‘80s. forget dolby 5.1 audio. forget realistic lighting effects. come to think about it, forget about 3—d graphics in most cases. attitudes to games weren't exactly enthusiastic, either. sports games. well, sports games, to me, are perhaps the most appalling use of computers. here it is, this is a decathlon. well, doing a decathlon on a commodore by wagging a joystick like this is really not a substitute for going out and getting a spot of fresh air. ouch. there was one genre of games, though, where the graphics and audio didn't matter. where it didn't matter that you would often be presented with a still, 8—bit image, or sometimes just a black screen

with a flashing white cursor — that screen itself was the window into worlds of limitless imagination. welcome to the experience of the text adventure. when computing power was limited, the text adventure that players the text adventure offered players head—scratching puzzles and mysteries, all brought to life by typing instructions into the game. but the reason that i've taken us on this journey down 32 kilobyte memory lane is a game. it's a game that i've been playing on this, the amazon echo. and it's a title that reminds me of those old text adventures quite a bit. leading you through the abbey, the abbess approaches one of the sisters. now, you might think playing a game on one of these is like trying to play a game on your microwave.

because the echo, of course, lacks a screen, or any other way of interacting with it other than barking commands at it. but that is exactly how the game i'm about to play works. play runescape. you take the role of an investigator... the player must solve a murder in a fantasy realm. the game plays like an interactive version of an audio book — you get a bit of dialogue, then it waits for a response. surprisingly, it commands quite a bit of your attention, and it's quite a relaxing way to play a game, although that relaxing mood is shattered

when you hear this... sorry, that is not a valid command. which you hear quite a lot. would you like to talk to the abbess now? talk to the abbess. sorry, that is not a valid command. go to the abbess. sorry, that is not a valid command. talk to the abbess. sorry... tell me, who is the murderer?! sorry, that is not a valid command. as the action progresses, it can shatter the illusion and becomes increasingly frustration when it does not understand what you are saying to it. which is obviously bit of a problem for a game you play by talking to it. sorry, that is not a valid command. when it does work, though, runescape on echo is a fun and immersive experience.

it also points to the potential these devices have beyond reading out the weather to you or reciting rubbishjokes. runescape is available by the skill section of the alexa app. i've got a sick bay filled with headaches... when star trek introduced a tri—corder that could scan a patient and come up with a diagnosis, it was in the realm of science fiction. but 50 years on, this dream is becoming a reality. and next week, we will find out the winner of a $10 million prize paying homage to star trek‘s medical device. the challenge? to design and build a tri—corder that will accurately diagnose 13 conditions and capture real—time vital signs. it could mean an end to unnecessary visits to the doctor. we figured out what the diagnostic process is, at least the way i'm

doing it, and built the system with that in mind. so it's not like a single device, like the star trek series. it — you interact with it, on our prototype, with a tablet, and then you pull out little components. so we have a little device like this, where the user will be guided — they are guided to listen to their breath sounds. so this type of device in your home is really a like medical centre, right in your house. so in the middle of the night, if your child is ill, if you're not feeling well, it's your first stop. there is a revolution coming in healthcare. and this is the type of device that is going to help give people the power to take care of themselves. and as soon as we know who has won,

we'll let you know on twitter. so follow us @bbcclick. and thanks for all your interactions on twitter, too, which this week included choosing the name of our artificial intelligence. so, say thank you, rory. thank you, rory. i am getting paid for this, aren't i? see you soon. the weather is going to remain beautiful for the rest of today and for many of us into tomorrow as well with more strong sunshine but there are changes on the way for tomorrow, particularly across north—western parts of the uk. the pollen levels

are parts of the uk. the pollen levels a re pretty parts of the uk. the pollen levels are pretty high today and into tomorrow but from monday we will see these pollen levels dropping away as there will be a change in the wind direction and it will cool off. this is precisely picture, it shows how sunny it is across our country but in the west of scotland and the northern isles, i was a bit more cloud here. let's look at the evening, it is looking beautiful. this is around 7pm, a bit more clouds here in the western and northern isles. for central and southern scotland, looking absolutely fine. temperatures in some areas 15 celsius. decent enough for northern ireland and looking across england and wales, in many areas in the high teens, not far off 20 celsius. coastal areas pretty cool 20 celsius. coastal areas pretty cool, around 13 celsius, and it will have been a cool day. the sea around the country is very cold this time of year. in the back inland it feels warm but on the coastal areas it feels nippy. especially with the wind coming off the english channel. this evening, clear weather, overnight lots of clear whether as

well and just like last night, chilly. last night we had grass frost in some areas and tonight it is cold an offer that the month again. mraround in is cold an offer that the month again. mr around in some places first thing on sunday but then a beautiful day across england and most of wales. then the cloud increases and spots offering getting into the north—west. a lot fresher here but in a chilly night england, particularly in east anglia, temperatures could hit 25 celsius. that is unusual for this time of year. the weather front moving across the uk during the course of monday is going to introduce much fresher air from monday is going to introduce much fresher airfrom the monday is going to introduce much fresher air from the northern climes, so this is a cold front coming through. the blue colours represent fresher air. a huge temperature drop by the time we get to monday. 15 celsius in london, single figures in northern areas. after that warm sunday, you are going to notice that chill for monday. from 25 celsius down to 12

celsius in london. by monday, but enjoy the weather from now. this is bbc news. i'm sophie long. the headlines at lipm. swedish police believe the man they've arrested is the driver of the lorry who carried out yesterday's fatal attack in stockholm. a man with links to the incident was arrested this morning at 1:15am. the man arrested is suspected of being the one who drove the car. foreign secretary borisjohnson calls off a visit to moscow, saying the chemical weapons attack in syria has changed the situation ‘fundamentally‘. hertfordshire fire service confirms two people have died and 33 have been rescued after a fire at a care home in cheshunt. the rmt union has defended its decision to stage a 24—hour strike involving merseyrail on the day of the grand national