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  • When we think about mapping cities,

  • we tend to think about roads and streets and buildings,

  • and the settlement narrative that led to their creation,

  • or you might think about the bold vision of an urban designer,

  • but there's other ways to think about mapping cities

  • and how they got to be made.

  • Today, I want to show you a new kind of map.

  • This is not a geographic map.

  • This is a map of the relationships between people in my hometown

  • of Baltimore, Maryland,

  • and what you can see here is that each dot represents a person,

  • each line represents a relationship between those people,

  • and each color represents a community within the network.

  • Now, I'm here on the green side, down on the far right where the geeks are,

  • and TEDx also is down on the far right. (Laughter)

  • Now, on the other side of the network,

  • you tend to have primarily African-American and Latino folks

  • who are really concerned about somewhat different things than the geeks are,

  • but just to give some sense,

  • the green part of the network we call Smalltimore,

  • for those of us that inhabit it,

  • because it seems as though we're living in a very small town.

  • We see the same people over and over again,

  • but that's because we're not really exploring

  • the full depth and breadth of the city.

  • On the other end of the network,

  • you have folks who are interested in things like hip-hop music

  • and they even identify with living in the DC/Maryland/Virginia area

  • over, say, the Baltimore city designation proper.

  • But in the middle, you see that there's

  • something that connects the two communities together,

  • and that's sports.

  • We have the Baltimore Orioles, the Baltimore Ravens football team,

  • Michael Phelps, the Olympian.

  • Under Armour, you may have heard of, is a Baltimore company,

  • and that community of sports acts as the only bridge

  • between these two ends of the network.

  • Let's take a look at San Francisco.

  • You see something a little bit different happening in San Francisco.

  • On the one hand, you do have the media, politics and news lobe

  • that tends to exist in Baltimore and other cities,

  • but you also have this very predominant group

  • of geeks and techies that are sort of taking over the top half of the network,

  • and there's even a group that's so distinct and clear

  • that we can identify it as Twitter employees,

  • next to the geeks, in between the gamers and the geeks,

  • at the opposite end of the hip-hop spectrum.

  • So you can see, though,

  • that the tensions that we've heard about in San Francisco

  • in terms of people being concerned about gentrification

  • and all the new tech companies that are bringing new wealth

  • and settlement into the city are real,

  • and you can actually see that documented here.

  • You can see the LGBT community

  • is not really getting along with the geek community that well,

  • the arts community, the music community.

  • And so it leads to things like this.

  • ["Evict Twitter"]

  • Somebody sent me this photo a few weeks ago,

  • and it shows what is happening on the ground in San Francisco,

  • and I think you can actually try to understand that

  • through looking at a map like this.

  • Let's take a look at Rio de Janeiro.

  • I spent the last few weeks gathering data about Rio,

  • and one of the things that stood out to me about this city

  • is that everything's really kind of mixed up.

  • It's a very heterogenous city in a way that Baltimore or San Francisco is not.

  • You still have the lobe of people involved

  • with government, newspapers, politics, columnists.

  • TEDxRio is down in the lower right, right next to bloggers and writers.

  • But then you also have this tremendous diversity of people

  • that are interested in different kinds of music.

  • Even Justin Bieber fans are represented here.

  • Other boy bands, country singers,

  • gospel music, funk and rap and stand-up comedy,

  • and there's even a whole section around drugs and jokes.

  • How cool is that?

  • And then the Flamengo football team is also represented here.

  • So you have that same kind of spread

  • of sports and civics and the arts and music,

  • but it's represented in a very different way,

  • and I think that maybe fits with our understanding of Rio

  • as being a very multicultural, musically diverse city.

  • So we have all this data.

  • It's an incredibly rich set of data that we have about cities now,

  • maybe even richer than any data set that we've ever had before.

  • So what can we do with it?

  • Well, I think the first thing that we can try to understand

  • is that segregation is a social construct.

  • It's something that we choose to do, and we could choose not to do it,

  • and if you kind of think about it,

  • what we're doing with this data is aiming a space telescope at a city

  • and looking at it as if was a giant high school cafeteria,

  • and seeing how everybody arranged themselves in a seating chart.

  • Well maybe it's time to shake up the seating chart a little bit.

  • The other thing that we start to realize

  • is that race is a really poor proxy for diversity.

  • We've got people represented from all different types of races

  • across the entire map here --

  • only looking at race

  • doesn't really contribute to our development of diversity.

  • So if we're trying to use diversity

  • as a way to tackle some of our more intractable problems,

  • we need to start to think about diversity in a new way.

  • And lastly, we have the ability to create

  • interventions to start to reshape our cities in a new way,

  • and I believe that if we have that capability,

  • we may even bear some responsibility to do so.

  • So what is a city?

  • I think some might say that it is

  • a geographical area or a collection of streets and buildings,

  • but I believe that a city is the sum of the relationships

  • of the people that live there,

  • and I believe that if we can start to document those relationships in a real way

  • then maybe we have a real shot

  • at creating those kinds of cities that we'd like to have.

  • Thank you.

  • (Applause)

When we think about mapping cities,

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【TED】Dave Troy: Social maps that reveal a city's intersections — and separations (Dave Troy: Social maps that reveal a city's intersections — and separations)

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    CUChou posted on 2015/03/20
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