this is gps, the global public square. welcome to all of you in the united states and around the world. i'm fareed zakaria. today on "gps" we'll bring you a glimpse of the future and the artificial intelligence that is becoming more and more powerful by the day. i'll talk to the head of ibm, the company behind watson. will watson take our jobs? or help us to do those jobs better?

>> also to ban or not to ban the about yo about your key any oig. i'll tell you why they begin with librte shouldn't even be asking this question. what to do with north korea. after another nuclear test. but is there any good answer? we will discuss. finally, a ticket to ride with the richest man in the world. bill gates wants to take you to south africa with him. >> when you come to south africa, you almost can't help but get filled with hope. >> come along. but, first, here's my take. whether you put them in a basket or not, the question of this election is, who are donald trump's supporters? one way to answer is to widen the scope beyond the united states. trump is part of a broad populous trend running across the western world. over the last few decades, we've

seen the rise of populism both left wing and right wing from sweden to greece, denmark to hungary. in each place the discussion focuses on forces that are particular to each country and its political landscape. but what's happening in so many countries with so many different political systems and cultures and histories, that there must be some common causes. in an important research paper they calculate that european populist parties of the right and left have gone from 6.7% and 2.4% of the vote in the 1960s respectively to 13.4% and 12.7% in the 2010s. the most striking finding of the paper, which points to a fundamental cause for this rise of populism, is the decline of economics as the pivot of politics. the way we think about politics today is still shaped by the basic 20th century left/right divide.

left wing parties advocated for increased spending and regulations on business. right-wing parties wanted limited government, fewer safety nets and more lay sissez-faire policie policies. voting patterns reinforce this ideological divide with the working class voting for the left and middle and upper classes for the right. engelhart and notice note that the old voting pattern have been declining for decades. by the 1980s class voting has fallen to the lowest levels in britain, sweden and west germany. in the united states it had fallen so low by the 1990s virtually no room for further decline. today an american's economic status is a far worse predictor of his or her voting preferences than her views on same-sex marriage. the authors also analyzed party platforms and found since the 1980s economic issues have

become much less important. noneconomic issues social and environmental have greatly increased in importance. as economics declined as the central force defining politics, its place was taken by a grab bag of issues that could be described as culture. it began as engelhart and norris note with young people in the 1960s embracing a post-material politics. self-expression, gender, race, environmentalism. that trend then generated a backlash from older voters, particularly men, who sought to reaffirm the values they grew up with. the key to donald trump's success in the republican primaries was to realize that while the conservative establishment preached the economic gospel of entitlement reform, conservative voters were moved by very different,

noneconomic appeals about immigration, security and identity. this is the new landscape of politics. and it explains why partisanship is so high. rhetoric so shrill and compromise seemingly impossible. you see, you could split the difference on economics. after all, money can always be divided. but how do you compromise on the core issue of identity or national culture? you see each side today holds deeply to a vision of america and believes genuinely that what its opponents want is not just misguided, but, well, deplorable. for more, go to cnn.com/fareed and read my "washington post" column this week and let's get started. in a moment, i'm going to introduce you to a multi-talented brilliance.

what if i told you there is a person who has read just about every medical textbook and journal out there and uses that knowledge to diagnose medical mysteries, but also has collaborated as a fashion designer on a dress that was worn by a supermodel at the met gala and helped produce the movie trailer for major feature film. oh, by the way is a published cookbook author and budding career as a weather forecaster and did i mention won a huge tournament on "jeopardy" even beating ken jennings. that last part might have been the giveaway. i'm not actually talking about a person but a machine. meet watson. ibm's tech platform that uses artificial intelligence and machine learning in extraordinary ways. that list of watson's accomplishments actually scares many who worry that computers are now powerful enough to do almost any human job. i went down to ibm's watson center in downtown manhattan to

talk about it all with ibm's chairman, president and ceo who is also a multi-talented brilliance. ibm is one of the world's largest companies with a market cap over $140 billion. welcome. >> thank you, fareed. nice to be here with you, again. >> explain to us the road to watson. what is happening in technology that led to this? >> this is a great question and speaks a lot to what everyone is experiencing around the world. either personally or in a business. there have been three big technology trends, i think, shaping our lives. one, cloud, mobility and then all this explosion of data around us. you have this explosion of information. it is impossible to understand it. this is the road to watson. we saw this long ago that there would be all this data for it to bring any value to business or to the world to solve these

unsolvable problems, you'll need a whole new way of computing of systems that could take that and make some sense out of it. if you think about it, go back 20 years in retail. if you were online buying something, not a big one, typical. you may have had half a million things you could look at. today, 20, 25 million. you as a buyer, how could you discern what is the right thing to do. that is just one small example. this is what led us to watson. the idea that this explosion of information and once you become digital you will need some way data will differentiate companies and that led us to this world which is watson which is, basically, think about it as the ability for systems to learn. >> how is watson different from your average computer? >> it is very different and i want you to not think of it as a computer. think of watson in this new world of cognitive. it is in the cloud. therefore, it is applicable to everyone.

think of it as being embedded in everything you can do. it will impact your daily life and impact your business. so, when you think of it that way as think of it as a service that could be embedded, it will touch billions of things. billions of people and billions of things that they do basically to help you make a better decision. whether that's personally or whether that's professionally. >> so let's take medical. watson does a lot of medical work. explain to us why watson is a better doctor than most doctors. >> i actually wouldn't say it that way. what i really envision, this is an important point about cognitive. its goal is not to replace anyone. in fact, it's been about our goal, not artificial intelligence, but augmenting intelligence and helping people make better decisions. that is, in fact, what we're doing. i mention we do work and i see this era doing work for both what you would call everyday decisions as well as solving the unsolvable and you mentioned health care. >> let's take a diagnosis. >> here's how it would go with a diagnosis. so, cancer.

cancer oncology adviser is rolling out and watson has been taught by some of the best institutions in the world. work we've done with cleveland clinic, mayo clinic, m.d. anderson, systems abroad. what a doctor would do to assist. watson has read all the literature on cancer, all the journals and all the text. your emr, your medical record which could be hundreds of pages long, your test. what it is going to do when i said it could understand and reason, just like you and i, forms hypotheses and knows what percent confidence and then shows a doctor these are the different kinds of ideas and the appropriate treatment.

>> but the key difference is, correct me if i'm wrong, you showed this to me once. a doctor can hold maybe a couple hundred articles in his or her head. and watson is looking at 2 million articles. >> well over millions and millions now. >> presumably with access to millions of articles and that much data, watson must make better diagnoses than an average doctor. >> it will help an average doctor and that is the point. you won't necessarily be able to see a world class oncologist but your oncologist will have that access to help them do their job. then they actually can do what we want our doctors to do. they spend time with you and understanding you. an average doctor visit, as you know, can be a very small period of time. that's why i say this is really a world where it will augment what professionals do and what each of us do. >> in the movie business the art of making the trailer is seen as a very soft skill. it's something you have to do, appreciating what an audience will like and how it evokes certain emotions.

so a successful movie trailer has been seen as a very fine art skill that an editor puts together and, yet, watson was able to do this thing that the human does, and it would take months, apparently, to cut a movie trailer and watson sort of did it in a day. explain how. >> watson helped the film editor to do this in a day, something it would have taken him weeks to do. this is an element and one path we've worked on which is creativity. in fact what watson's doing is watching different movies and watching then how people respond and what is it they're responding to. and then looking for in this movie what are the elements that would duplicate that and then giving that input to the person putting together the trailer to have them then put together the most popular trailer and elicit the right audience behavior from that. very much that idea that these systems can learn and learning from observation, reaction and knowing how people's brains work and how their emotions react and puts all that together. >> so what it suggests is that all these things that we think of as creativity --

>> assisted. >> but broken down, digitized and coded so that a computer can understand? >> in many ways they can be. people think of things like smell and taste, but, actually, or even the way you react when maybe you smell something that you remember from your childhood. it brings back. these are all chemical, can be broken down into chemical equations and, in fact, by doing that then, you can come up with better recommendations. we're doing work with campbell soup about how to prepare the right recipe and remind you of when you were young. that kind of thing. they can be broken into equations and digitized. next, when they all agree on something, i certainly listen and the three of them concur that while there are many huge upsides to artificial intelligence, there could be a huge downside, too. could artificial intelligence wipe us all out? i will ask watson's owner, ibm chief ginni rometty when we come

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we continue to follow breaking news out of new york city. let's listen in. >> -- the whole team swellings all the first responders who have done an extraordinary job since this explosion happened yesterday evening. as everybody knows, there was an explosion on west 23rd street. there is significant property the damage on both sides of the explosion. 29 people were injured. there were no fatalities, something to give thanks for today. because when you see the amount of damage, we really were very lucky that there were no fatalities at the time. we just inspected the subway station, the p.a.t.h. station in the immediate area to see if there was any damage done from

the explosion to the subway station, the tunnels, et cetera and we're happy to report that there was no damage. so the mta is ready to be up and running as early as tomorrow to return to full service for those stations. there may be certain entrances and exits that are closed depending on where the investigation is at that time. but we will keep you up-to-date on that. i've been briefed by all the relevant agencies. at this time there is no evidence of an international terrorism connection with this incident, but it goes veis very early in the investigation and it is just starting. the fbi has brought the evidence that they have collected from

the site of the cexplosion as well as the bomb that did not detonate and they will be studying that. there was also an incident in seaside park, new jersey. they're also taking that material to quantico to review that material, also. i spoke with governor christie this morning and we're coordinating resources between new york and new jersey to see if there is anything that we can learn. the main coordinate of mechanism is something called the jttf, the joint terrorism task force, and that is up and operational. but the bombs that were in seaside, new jersey appear to be different than the ones that were in manhattan. as i mentioned, the response by the first responders was extraordinary. you drill all the time and you

run exercises all the time, but it's still different when it happens. i spoke to mayor de blasio, the nypd did a great job, the fbi has can it updone a great job, security, new york state police, fire department, everyone worked together and is coordinating on the investigations. we have no reason to believe at this time that there is any further immediate threat, but just to err on the side of caution, we will be deploying close to an additional 1,000 new york state police and national guard people to police the bus terminals, airports and subway stations. again, just to err on the side of caution. and i want new yorkers to be confident when they go back to

work on monday that new york is up and running and we're doing everything that we need to do. and i feel comfortable that this additional deployment will help do that and is prudent on this occasion. the bottom line on this is number one, whoever placed these bombs, we will find and they will be brought to justice. period. you have the finest police agencies in the world when you come to new york. and we will find who planted these explosives and they will be punished. thumb two, we will not allow these type of people and these type of threats to disrucisrupt life in new york. that's what they want do. we're not going to let them do it. this is freedom. this is democracy.

and we're not going to allow them to take that from us. so feel safe. everything that needs to be gun is being done and more. and we're going to enjoy new york and we're going to go back to work tomorrow just like we do on any monday morning. [ inaudible question ] >> the evidence that is now being gathered is going to quantico. i believe that the seaside park bombs are en route to quantico. the unexploded device from new york may not yet have made to quantico. i'm not sure. [ inaudible question ]

>> they were both similar in design. but let's let the fbi do their investigation. again, this is very early. they're just getting the devices, just starting the investigation. so once we get the investigation, we'll have all the fact and then we can speak intelligently. >> it was said last night there is no evidence that there was connection to terror. what are you hearing? >> i believe the hair was smayo saying that there is no kegs to international terrorists. and that is credit. no one has taken credit, there have been no international groups that have put out any statements that are connecting them with this action. now, it defenpends on your definition of terrorism. a bomb exploding in terrorism is obviously an act of terrorism, but it's not linked to international terrorism. in other words, we find no isis

connection, et cetera. but a bomb going off is generically a terrorist activity. that's how we'll consider it. and that's how we will prosecute it, also. but the mayor is correct, there was no link at this time at this preliminary stage to international terrorism. >> so this could still be lone wolf act? >> could be. could be. could be because we just don't know. we know there has been no international terrorism organization that has taken credit, but we don't know. i've been in the federal government, i've been through a number of these incidents. you know, you can guess, you can hypothesize, or you can just wait for the facts and go from there. so we know what we know at this point and i'd be dubious about speculating on what we don't

know. [ inaudible question ] >> as governor of new york, this is my worst nightmare, right? my worst nightmare is the phone rings late at night and there is some terrorist attack, emerge y emergency, flood, hurricane, act of mother nature that puts lives in peril. so this is the nightmare scenario or one of the nightmare scenarios. and your mind immediately goes to was anyone hurt, was anyone killed. and luckily depending on how you look at it, 29 injury, but no

fatalities. and when you see the damage, i think we were fortunate in a there were no fatalities. and when you see the site itself, it just confirms that. it was a significant amount of damage. the property damage on both sides. with the information of the explosion, you can see it down the block, it was across the street, glass everywhere, shrapnel everywhere, so that we didn't lose anyone, we were fortunate. and then the second response is we're not going to let them win. we're not going to let them win. what do they want? they want to instill terror. that's what they want. they want to make you afraid. they want to make you worry about going into new york city or new york state. they want to make you worry about going across a bridge or a subway. we're not going to let them instill fear because then they

would win. so we have the best response team on the globe. it's here, it's working. the best protection team on the globe. on the side of caution we'll add an additional 1,000 national guard and state police just to make sure people know that we're on the scene and we're on the job. and we're going -- life will go on in new york just the way it did the moment before the bomb exploded. we're not going to let them win. [ inaudible question ] >> not that i know of. >> are you saying that the one here was -- [ inaudible ] >> that is my knowledge and what i've been informed, but obviously that bomb detonated, so there is only pieces of it. and i would wait for the fbi do a full analysis before i come to

any conclusion. [ inaudible question ] >> my information again at this preliminary stage is the devices were different. they were basically pipe bombs used in new jersey. different bombs were used here. but the fbi will do the analysis. i spoke to governor christie this morning and we'll have our teams working together to see if there is anything that they can learn one from the other. [ inaudible question ] >> say it again. >> can you talk about the search to find the suspect or suspects, surveillance video or anything like that to find the place of either one these bombs and you can be more specific on tomorrow morning, should new yorkers expect to use the 23rd street entrances by rush hour? >> they are reviewing all the videotape from the area now to

see if they can identify a person. obviously all agencies are coordinate this this investigation and in this manhattan. as i said, we will find whoever did this or whatever group did this and they will be brought to justice. period. and we'll ged indicate all fess resources to do that and you're dealing with the best police agencies on the globe in doing that. as far as opening the 23rd street station tomorrow morning, as we mentioned before, it is strug structurally safe. some of the entrances are in the crime scene right now, so we'll have to say how the investigation proceeds throughout the day and if the fbi reduces the crime scene and releases those entrances. but we'll make that information on the transit authority website

exactly what entrances and exits will be open as we get information through the day. [ inaudible question ] >> yes. >> what is going on with them, how are they, what were the injuries? >> i have only the information that you have. most were treated and released. there may be several who have not yet been released. several were serious injury, but no fatalities. but i have no new information on that. >> was it from flying metal? >> people in that area when the bomb exploded and got hit by glass or debris, et cetera. [ inaudible question ] >> no. we wanted to give you an update

on what the state was doing and the mta and subway stations, et cetera. i spoke to the mayor this morning and he'll give you an update on what the city is doing and that's the way we normally handle these situations. just so you don't think i'm very responsive to your question. all 29 victims are confirmed released from the hospital. so that is really good news. thank you very much. thank you. >> you heard there from new york governor andrew cuomo ending this news conference with the best news, 29 victim, all 29 injured after this bomb detonated yesterday, now 14 hours ago, all 239 have been released from the hospital. but a lot of developments in this news conference. let's bring in tom fuentes. the headline here, no connection to international terrorism, but

as you and i discussed this morning, the classification that you expected has now been put pop this eve upon this event, an act of terror. a bomb exploding in new york is an act of terror. >> correct. it's what we were saying, that the event is certainly a terrorist act. and because it's terrorism, the fbi takes the lead in this. now, they're taking a very low profile. they don't want to get into a cop d contest and embarrass the officials, but that's why the devices are going to quantico for analysis, that's why the governor said the subway stations will be opened when the fbi says they can be opened. the stwreets that are now part of the crime scene will be opened to the fun when tpublic fbi makes that determine. so it is a terrorist investigation and the fbi has a lead because in a way that is irrelevant because the joint terrorism task force in new york has hundreds of police officers

from all of the various agencies in new york, including more than 150 new york city police detectives and they work closely with the intelligence division of nypd. so it's a joint effort, but it is a terrorist act. and the mayor last night said that we will not let them disrupt our lives and change the way we live. now the governor makes the same statement. that tells you right now that they have known since last night that this is terrorism. somebody has committed acts designed to put fear in the public, change the way we do business. bring about something, whatever their agenda is, and it's not just the personal crime where somebody wands to kill their husband or wife or business associate or damage a building because they got kicked out of it or some other personal motive. that this has a grander motive. >> we also learned about these

devices. first, the governor saying that the element that detonated on 23rd street was similar to the one that was discovered on 27th street. so now we know we're talking about two pressure cookers and he referred to the device and this we have a photograph that did not detonate as a bomb. >> they referred to all the devices as bombs pretty much from the beginning. sources were telling me early last night improvised explosive device which basically is a bomb caused the injuries. and that's what would have been relayed -- by the way there, a joint operations center that has pain in effect for several weeks in new york because of the u.n. beginning their session this week. and as a result of that, secret service would have their agents in there, all federal and state and local agencies in the area would have representation in that operation center and what i think happened last night is that secret service agents at

the center advised the agents that are with mr. trump and miss clinton and said we believe we've had a bomb go off and that's where that rhetoric began from their briefings when though plane those planes landed, they were going by what they were told and that could have come because the secret service would tell both candidates, look, we don't know what this is all about yet, we know that we've had a bomb detonate in new jersey, now a bomb in new york city, what is next. are you going to be attacked, is your plane going to be threatened. to those type of concerns. so that's how that information would normally have gotten out last night and what the candidates would have been told right at the time their planes landed. >> some of the discussions behind the scenes now happening in front of the cameras as we period there from governor cuomo referring to both as pressure cooker bombs.

these elements will now being sent to quantico. walk us through what is happening there. >> well, they take them there and you have very, very well experience abouted competent explosives efforts, bomb experts there at the bomb data center. and they will be looking at every device, the three devices that we have. the one in new jersey as well as the two in new york, the one that detonated, the one that didn't. and they will be looking for any information from those devices, the wiring, the way the detonation was set up, the components that were used, the type of powder or explosive material or resident due that was used to see if there is a similarity to make the bomb. or maybe a finger print, hair fiber, dna, skin particles that might have been left on the unexploded device in particular. so that is what that investigation will be about. and they should have, you know, pretty early in this be able to

say whether those three devices were probably made by the same hands or not. but they will have more information about that. once the devices get to the laboratory and once they get a collapse to begin their analysis on the devices. >> tom, stand by. i want to bring in jessica schneider who is in new york near the scene of this blast. governor cuomo there said that an additional 1,000 members of national guard and state police will be out patrolling. he also said that it's a miracle that no with an was injured here suffered fatal injuries based upon the damage that we've seen. what are we seeing there at the scene? >> reporter: yeah, governor cuomo was here for about an hour. he surveyed the scene and the damage right up there by 6th avenue. he says that the damage is significant, significant property damage. and because of that, he says it's miraculous that the people who were injured weren't injured

more severely. in fact speaking just a few minutes ago as you heard, governor cuomo said all 29 people who were injured, most of them taken to the hospital, all have now been released. so he said amazing and these thankful that the damage and injuries weren't more significant. but of course, coming out of this press conference, two major points. first of all, governor cuomo clarifying mayor de blasio's comments from last night saying that there doesn't appear to be a link to international terrorism. mayor de blasio last night simply put it as blanket terrorism. and in addition, governor cuomo stressed that the the focus right now is on forensics. the explosive device as well as the pressure cooker that was found at west 27th street that did not explode, those devices have been taken to quantico, being looked at by the fbi. also significantly governor cuomo saying that the exabout motion that happened yesterday morning in seaside park, new jersey, it was early in the

morning about 12 hours before this explosion, that happened just before the beginning of the marine corps charity race that was going on, there were three pipe bombs, one exploded. now governor cuomo working in conjunction with new jersey governor chris christie. governor cuomo saying that it does not appear that the pipe bomb materials that were used at seaside park are the same materials used here. they're still trying to determine if there was a link between these two, especially considering the fact that happened in such close proximity, so close in timing, a bit apart in distance. but governor cuomo saying he is working with governor christie, also waiting to hear the results from the fbi. and as you mentioned, governor cuomo also announcing that they will be thinksing about 1,000 extra new york state police officers as well as members of national guard. of course tomorrow being monday, people here in new york city headed back to work. governor cuomo saying what is of

the ultimate most importance is that people continue to feel safe in this city and continue to move on as normal. vehicle tore. >> and the governor adding that the subway station there near the scene of the blast suffered no major damage. jessica schneider, thank you so much. the two major headlines out of what we learned from the governor, all 29 victims of in blast last night in the chemical ci chelsea community have been released from the hospital and this has been called whatical chelsea community have been released from the hospital and this has been called what afternoon li analysts expected, an acts of terror. stay with us. we'll take you live to the hospital after the break. mornin'. hey, do you know when the game starts? 11 hours. oh. well, i'm heading back to my room. (announcer) want to wake up at super bowl 51? super bowl! (announcer) enter courtyard's super bowl sleepover contest

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we will typfind who planted these explosion sifs ves an and will be punished. and we will not let these types of threats disrupt our life in new york. that's what they want to do. we're not going to let them do it. this is freedom, this is democracy, and we're not going to allow them to take that from

us. >> governor andrew cuomo saying that the terrorists who committed this act detonating that bomb will not stop new yorkers from enjoying the city and going on with their lives. he also said that it's a miracle that no one died as a result of that explosion. we know 29 people were injured. we also learned just moments ago that all 29 victims have been released from local hospitals there in new york. cristina alesci is outside of bellevue hospital. and i understand that you're hearing there some of the the victims? >> reporter: yes. and what we're hearing at bellevue where 11 of those victims were treated and released is that they were treated for relatively minor injuries, probably as a result of debris from the explosion, glass, metal, flying through the air. and while those images that wife been watching all morning are disturbing, luckily a lot of

those people were able to get treated and get home. so that's really good news. that said, we were monitoring the situation of one serious injury and it seems that that person was released, as well. like i said, people were definitely shaken up and in addition to being exposed to that debris, there was also one victim that my colleague spoke to who was actually driving in a car and the force from the explosion was so great that he lost control of the vehicle. take a listen. >> i vaguely remember driving the car and next thin yg you kn, i felt an explosion and the car tilted over and came back down. and i just blacked out and next thing you know, i'm in an ambulance. >> and what about you? >> everything was so sudden and fast. it was more of a shock that i remember. >> how are you doing thousand?

>> pain. you know, a little traumatized. i was close to not seeing my son again. that was scariest part of your night. >> not seeing your son ran through your head. you thought you were going to lose your life. >> yes. to be caught in the explosion, i was like oh, man. everything was moving fast and i was stuck in slow motion. felt like i was in mud. couldn't move. quick sand. >> what about you? >> i really was in shock mode. just like shock stage. >> would you say you're still in shock? >> yeah, pretty much. i mean being you just don't know what to expect at the moment. >> what kind of injuries do you have? you're on crutches i see. >> well, sprained knee and head injury and i have to go back and see if i need more treatment for

my knee. >> reporter: we've been talking about this before. 23rd street is very busy. especially on a saturday night. and given the force of the explosion, it's really remarkable that more people weren't hurt and that there weren't more serious injuries. and as governor cuomo said that there wasn't a fatality involved here given the damage that you're seeing on your screen right now, that is really truly lucky for new york city and i think new yorkers right now are breathing a deep sigh of relief. >> we know that the investigation of course continues. bombs have now been taken to quantico, but still a major footprint there as they look for any evidence that could lead them to the person responsible. cristina alesci, thank you so much. we'll take a quick break and look more into the investigation as it begins.

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at charles schwab. i'm victor blackwell. covering the breaking news out of new york. hearing from the governor the latest on the investigation. let's bring in tom fuentes. tom, we know you expected this would be classified as an act of terror. all 29 people are out of local hospitals and the bombs have been september to tsent to the labs at quantico. we've heard from the governor that there is no evidence of any furtherseptember to sent to the labs at quantico. we've heard from the governor that there is no evidence of any further threat to the city of new york. is that based on the absence of a variable or the presence of one? how do they make that determination? >> i don't know how he makes that determination actually. if you walk down the streets of new york anytime of the day, as you walk down the sidewalks,

there are many trash cabe containers out. plastic bags. garbage bags.out. plastic bags. garbage bags. dumpsters. on how do you say that there isn't another device in one of those tens of thousands of containers out on the street. i think that is what is leading him to deploy the national guard and state police so that they can patrol and look inside of containers like that and try to see if they can find another device not knowing where one might be planted at some future time. >> we're about 14 hours into the investigation and there is a significant area of lower manhattan that is still blocked off after this bomb detonated. how long do you expect that that will be the case? >> good question. i don't know what they are finding on the sidewalk. you had the rob that whproblem the devices were located last night, it was nighttime. and it's a -- it's not lit up

like times square. it's a darker area. so they were very much hampered in darkness in trying to do an adequate crime scene search. so i think that they are looking in every trash can, have the dogs try to sniff out another explosive if they can. and it's a very methodical job and they have only had a few hours of daylight so far to be be able to do it. so i think that the darkness last night delayed the real intensive ground search that they are try doing today. >> we learned that there is a bit of a setback in the investigation already, some of the surveillance video that investigators were watching seems it is too dark or too grain knee y to pick out a pers could be responsible.

>> and they don't have an adequate description not only for their own investigation, but to put out to the public. will boston when the photos of the tsarnaev brothers and videos of them were put to the public, a lot of of phone calls came this because they recognized the baseball hat or the way that they this walked or demeanor and build. you don't have any of that in this case so far. there might be another video that shows up, but as of now, they don't. and even the store security cameras down the street might not tell that you that person was the one that actually was down on the sidewalk earlier. you'll have different cameras that they will try to butt together in chronological order. >> tom fuentes, thanks so much for the analysis. >> you're welcome. >> the headline here, 29 people who were injured in what is now being considered an act of terror all out of the hospital.two bombs that were discovered, one detonated last night at 8:30, have been september off to tsent off to the lab in quantico to

try to find evidence. we know bill de blasio will hold a news conference at noon and we'll bring you of course the latest that we learn from that. thanks for staying with us. we send you now to "reliable sources" and brian stelter after a quick break. >> i saw some people covered where debris, you know, soot, dust. there was smoke. there was a lot of fire engines, a lot of police presence. i saw an elderly man which was very hard to watch, but he had blood on his face, his arm. if you're searching other travel sites to find a better price... ...stop clicking around... the lowest prices on our hotels are always at hilton.com. so pay less and get more only at hilton.com.

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good morning. i'm brian stelter. time for "reliable sources," our weekly look at the stories hin the stories. this morning new york city is on high alert, well aware of last night's explosion on 23rd street here in manhattan. at this hour a possible second device is being taken apart and probed by law enforcement. we've heard from the governor saying this does not appear to be linked to international terrorism, but there is a lot we still don't know. we're standing by for a press conference in the next hour with new york city mayor bill de blasio and a number of other officials. in the meantime, there is a whole the lot happening at the intersection of media an politics. donald trump is playing a game. a game reporters are getting tired of playing. honestly, they're getting tired of being played. consider the five things he did just that week. on wednesday he brought his