Beyond the classroom, anyway

March 9th, 2007

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06. Market

March 3rd, 2007

of souk and city

We’ve spent some time now looking at what happens when private space empties into the flow of the street, and what happens when two such street-level flows cross at an intersection. We now turn to a consideration of a feature that has historically arisen at urban crossroads with astonishing frequency: a market.

In its barest essentials, all that is required for a market to come into existence is one person with something to sell, and someone else willing to buy it. Stanford economist John McMillan explains that an additional five factors are required (”information flows smoothly, property rights are protected, people can be trusted to live up to their promises, side effects on third parties are curtailed, and competition is fostered”) before a market in the modern sense can be said to exist, but at root two parties willing to make some exchange of goods for something else perceived to be of value is all that is necessary.

This is one of the dogmas of classical economic theory: that when autonomous actors are free to make, or to refuse to make, contracts, they only enter into bargains they perceive to be of some advantage to themselves. In theory, therefore, both buyer and seller benefit from a sale - after all, why would anyone enter into an arrangement they didn’t profit from in some way, if they could just as easily walk away? (This is why all such exchanges are said to “create value,” as if out of nothing.)

And although the real world provides us with abundant evidence that people often cannot or do not “just walk away,” as apologists for the market economy frequently point out, it’s hard to deny that this urge to make advantageous exchanges nevertheless runs pretty deep in the human psyche. Markets have historically sprung up in some of the least propitious circumstances imaginable, from refugee camps to prisons to polar research bases.

What’s the connection between crossroads, markets, and cities? Fundamental to understanding how they interrelate is the notion of arbitrage, the art of buying a commodity where it is cheap and selling it where it is expensive.

Arbitrage historically owed its potency to stark differentials between the ecosystems in which human habitations have emerged, and to the physical difficulty of transporting goods between them. Demand for saffron, and therefore the price offered for it, was low in classical Persia, but high in China; lobsters are abundant at the seaside in Maine but relatively hard to come by - and therefore capable of commanding far higher prices - at table in New York City.

Factoring in circumstances like loss, theft, and the depredations of pests and weather, if it costs less to purchase, package and transport a camel-load of saffron from Kashmir to Chang’an than one can demand for that cargo upon arrival, then effective arbitrage - and profit - can be made.

And it’s a subtle point, perhaps, but a road (or a river) is a way to reduce the incremental cost of each mile traveled, a smoothening of the world. In terms of economic geography, the ideal place for an exchange is the basin where two or more such smoothenings join.

This in itself has often been enough to launch a city into being. Marrakesh is perhaps the most famous such place, owing its founding in 1070 to the fact that it marked the point where Arab, Berber, and African caravan routes converged.

Or consider the case of London. But for the Thames itself, Borough Market is one of the city’s oldest discernible features, having been founded on the south bank of the river in Roman times. In fact, it may have preceded the city; current research suggests that Londinium arose as a consequence of mercantile activity, being located at the first downstream point on the Thames where it was possible to ford easily. At the risk of sounding like an cheerleader for the contemporary free market system, it seems clear that markets literally make cities.

(I should point out here that markets did not solely come into being at crossroads; the all-but-algorithmic Roman city plan provided for each Roman settlement’s bisection by a thoroughfare called the Cardo, a north-south axis devoted to commercial activity - in effect, a linear market.)

the district line

Once established, the nature of markets further shapes and gives structure to urban place. If nothing else, merchants holding the same sort of stock in trade tend to gather together, a functional differentiation which can clearly be seen in this map of Barcelona’s famous Mercat de la Boqueria, or the “Mobile Phone Street” of Seoul’s Yongsan Electronics Market. Other times, entire markets specialize in certain commodities; Idumota Market on Lagos Island, the epicenter of the emergent Nigerian film industry known as “Nollywood,” is an excellent example.

Such aggregation serves at least two purposes. First, it enhances the legibility of a place, in the Lynchian sense; whether I’m looking to buy a phone or ten pounds of artichokes, nothing is so likely to assist me in finding what I’m looking for as row after row of same, stacked to the roofline in appealing displays. But probably more centrally, the clustering also reduces the information costs incurred by prospective buyers, by ensuring that they can walk from stall to stall with comparative ease, pick up the items on offer and evaluate them in comparison with others available.

And this double articulation of specialization followed by aggregation, is the force that ultimately gives rise to urban form. When a sufficient mass of merchants specializing in a single stock-in-trade gathers together, the entire surrounding neighborhood inherits an identity. Manhattan has and has had many such, from the Garment, Diamond and Flower Districts of long standing, to the Radio District evacuated to make way for the World Trade Center, to the de facto Car Audio District clustered at the western end of Canal Street.

Steven Johnson, in his 2001 Emergence, describes the unusual persistence such autocatalytic structures can display:

Imagine a contemporary citizen of Florence who time-travels back eight hundred years…What would that experience be like? Most of it would be utterly baffling: few of modern Florence’s landmarks would exist…And yet, despite that abject confusion, one extraordinary thing remains constant: our time traveler would still know where to buy a yard of silk.

money and binary: two universal solvents

But what if Johnson’s time traveler were instead to jump forward eight hundred years? Would he or she still find the silk merchants arrayed in their glory along the Por Santa Maria?

I’m not so sure. For the last few hundred years, capital has been a universal solvent slowly working away at cultural activity, transforming family relations, sexual relations, even the I-Thou relation at the heart of monotheism into commercial propositions. Functions that had originally properly belonged to the members of the family, to ritual, to the polity, have successively been displaced outside those structures and reorganized on transactional lines.

Well and good, perhaps, and in and of itself evidently not enough to inflect the structure of our cities in unfamiliar ways. But for the past decade or so, another universal solvent has been etching its way into the structures our cultures are built on: the binary code of ones and zeros. My old bosses at Razorfish used to insist that “anything that can become digital, will.” They were absolutely correct. Any given text, song, or sentiment can now be decomposed into a stream of binary, transmitted at the speed of light.

Not (never) to deny the materiality of place or the actual energetic costs of producing such, but the shape of the contemporary city - I don’t think it’s at all a stretch to say the contour of contemporary culture - is increasingly an interference pattern set up by the intersection of these two wavefronts.

One result is, of course, that anywhere can become a market. This is the rather tawdry dream of m-commerce: that you’re walking down a street, you happen by a shopwindow filled with appealing goods, and you tap or point your phone at them and they are yours.

Another is that markets can arise in and for anything which can be so encoded, anything at all. The last several hundred years have seen an increasing refinement in the soft technologies of the market, in which trade in concrete commodities is increasingly supplanted by trade in abstractions: shares of a joint-stock corporation, futures and other sorts of derivatives, eventually things like pollution rights or carbon-sequestration credits. Such instruments clearly diffuse risk, and act as a damper on what would otherwise be highly discontinuous fluctuations, but they also introduce a profound disconnect between the world of finance and that of everyday experience.

And finally, as we are now in a position to see clearly, the rise of e-commerce over the last ten years has begun to eat away at one of the primary organizing logics that has shaped cities for millennia. The whole point of aggregating large bodies of people in cities is to enable the twinned processes of housing, feeding, and supplying them (on the one hand) and extracting their labor (on the other) to benefit from economies of scale.

One very happy fringe benefit of this is that it has historically allowed niche propositions to find purchase and to flourish in metropolitan places - niche propositions like vegan restaurants, leather bars, dealers in refurbished Italian motorscooters, or booksellers willing to stock the dense and impenetrable works of obscure French theorists.

If great cities derive in every sense the better part of their meaning and texture from being basins of attraction - from drawing on captive catchment areas, and aggregating from them both talent and demand enough to allow otherwise chancy propositions to thrive - what happens when the digital begins to erode the power of proximity? What happens to the sense of neighborhoods when instantaneous ambient broadband connections drive the information costs involved in comparison shopping close to zero, and there’s no further point or benefit involved in huddling together in a District?

To be honest, I don’t know - but I have a strong suspicion we’re all of us about to find out.

05. Crossroads

February 25th, 2007

What happens when two or more city streets intersect?

One way to understand the question might be to look at all the things which have historically arisen at crossroads, as a consequence of their providing a junction and an interface between flows in different directions. And it’s certainly true that you can find intersections of this classic sort in the city, sporting just the taverns, hostelries, caravanserai, and other impedimenta of commerce you’d expect. In many cases, such intersections have been prominent ever since serving as a node of an old trade or governmental route hundreds or even thousands of years before.

But that’s not really the image that leaps to mind when we talk about big city intersections. Because starting in the late nineteenth century, a very distinct type of public space arises in the largest cities, one neither fully given over to the role of thoroughfare nor (by dint of high-throughput vehicular flow) particularly well adapted to pedestrian use. And these are the intersections which, for many nonresidents, stand as synecdoches for an entire city and (imagined?) way of life.

Consider New York’s own Times Square, the “crossroads of the world.” London’s Piccadilly Circus. The Place d’Etoile, site of the Arc de Triomphe, where twelve streets intersect in Baron Haussmann’s plan of Paris. Moving eastward, Tokyo’s Shibuya kosaten, featuring a bewildering multi-way pedestrian flow, self-referentially iconic display screens, and the world’s highest-grossing Starbucks.

These places are not merely symbolic of their respective cities: they stand for the idea of City itself. There happens to be some irony in this, because, with the exception of the Place d’Etoile, all of the above-named spaces are about the same size, and (crucially) that size is always smaller than you imagine, or remember. Defined by the width of the boulevards passing through them, these are all sudden voids in the urban fabric, not sprawling plazas like Tiananmen Square or Berlin’s Alexanderplatz.

This sense of a surging flow being contained within narrow limits is probably what gives such places their uncanny resonance. Especially for those coming to it from somewhere a little more sedate, the Brownian press of other bodies and the overwhelming onslaught of light and sound you encounter in a place like Shibuya intersection add up to an unforgettable experience of intensity.

Of course, there are many kinds of intensity, and we all know that “hustle” has two different meanings. “Piccadilly” has always connoted the louche and the disreputable; for decades, Times Square was a byword for sleaze, desperation, and every kind of vice. This obviously isn’t the only reason such places come to stand out so in our memories, but it’s not likely to be incidental, either.

Disreputably or otherwise, these intersections do loom awfully large in our image of the city. This high degree of prominence, this top-of-mind quality is what makes any such place a good candidate to host a Schelling point, or node of unconscious coordination. They’re simply where we expect people to meet.

And in any place or time where you can reliably expect large groups of people to congregate, you won’t have to look very far to find someone wanting to pitch something to them. For advertisers, these crossroads are something akin to the Super Bowl ad of outdoor signage: the threshold of the Big Time, the place where you spare no expense to announce your arrival to the world (and one-up the competitors). For a certain kind of emerging enterprise, these locales are must buys for this very reason; you knew corporate Japan’s fat, happy days unchallenged atop the consumer-electronics industry were just about over the moment gigantic Samsung and LG billboards appeared in Times Square.

As it turns out, the introduction of media-sharing services like Flickr and YouTube has provided those who advertise in Piccadilly and Shibuya and so on an unexpected boon, in the form of a multiplier effect.

Not only do your billboards get seen by all those passing through the intersection, but by all those who later see representations of what are almost by definition the most-photographed locales in a given city. Every photograph of Aunt Clara and the kids in front of the tkts stand that “just happens” to capture a McDonald’s ad in the background therefore does double, triple, multiple duty - and only the first-order exposure is paid for in the media buy. The rest is pure gravy.

It’s for reasons very much like this that the major intersection often seems to be at the forefront where questions of digital mediation at urban scale arise - certainly, Times Square and Shibuya intersection have both seen significant experimentation with transactions between personal mobile devices and building-scale screens. But lost in all the thought about how best to engage (and monetize) all those eyeballs is often any notion of what these places originally meant, with their raffish glamor, churn and sleaze intact. It may take a more mature generation of digital intervention before these qualities are allowed to sing again.

04. Street

February 17th, 2007

1.

Even considered solely as thoroughfare, the richness of the city street is all but inexhaustible.

Start with the sidewalk underfoot. Simply as a way for pedestrians to move through the city, sidewalks turn out to be unexpectedly complicated ecosystems. New York City’s Department of Transportation officially defines six “levels of service” for sidewalks, from A through F.

The mood of the street changes noticeably as each threshold is passed, from the wide-open if detectably melancholy tenor of LOS-A - where each user enjoys 130 or more square feet of space, is free to choose his or her own path, pace, and direction, and finds that “conflicts between pedestrians are unlikely” - to the final crunch experienced as the area of space enjoyed by each pedestrian drops below six square feet.

This is LOS-F: “all walking speeds are severely restricted. There is frequent, unavoidable contact with other pedestrians. Cross- and reverse-flow movements are virtually impossible.” Molecular movement is out of the question, in such a throng; you move as a molar unit, or not at all.

Putting aside for the moment the strong likelihood that the precise value marking the transition from one level of service to another is subject to local variation, these are the conditions that bracket between them the entire range of possibilities we think of as “street life.”

Building ingress and egress become difficult or impossible beyond some critical threshold. Street features like newsstands, café terraces, and advertisements are all activated by some velocity of throughput between these two poles. (What is the maximum walking speed at which you can read an orthogonally-presented newspaper headline, or an ad, without breaking pace?) Even quantities we don’t ordinarily think of as having anything to do with speed - the mean distance between lamp standards, for example - turn out upon closer inspection to be conditioned on assumptions of the rate of pedestrian flow.

This flow is invariably subject to restriction of various sorts. Behind closed doors, among those who share the assumptions governing a given private domain, these constraints generally go unstated, but the street, being a public place, is of necessity a zone of enunciated rules: DON’T WALK, LOOK BOTH WAYS, NO PARKING, and so on. Below our feet, a rich set of markings constitutes a private hieroglyphics of infrastructure - an “urban markup language” regulating flows of a different order, decipherable only by the specialists for whom it is intended.

Then there are the sidewalk features that begin to implicate the street proper - bus shelters and bays (i.e. nodes of another circulation network overlaid onto that of the sidewalks), traffic signals, the curbs themselves. These refer to a set of parallel flows which negotiate the space between buildings at (ostensibly) higher velocity. Moving through a space at the speed of driving activates different potentials than doing so at the speed of walking; as we’ll see, the car kills the body, in more ways than the merely literal.

Not everyone, of course, acknowledges these distinctions. Particularly, a skateboarder’s or a bike messenger’s refusal to observe the distinctions between street, alley, sidewalk and architectural feature makes of the city a more or less smooth space of flows.

However constrained or frictionless, it’s only natural that this space is sometimes confused with the city itself. Just as it’s said that the outlines of any given human body are discernible in a map of the nematodes infesting it, it’s tempting to conclude from diagrams of automotive or pedestrian traffic that flow is the function of street. And while it’s true that flow - circulation, exchange - is ultimately what makes cities possible, that’s not the whole story.

2.

We know that a street is never simply a means of circulation.

We’d know this even if we did nothing more than listen to the language, where the word shows up in constructions connoting averageness (that classic icon of the mid-century masses, the “man on the street”), the mass opinion (”the Arab street”), corruption (Maggie: A Girl of the Streets), authenticity (”You are now about to witness the strength of…“), promiscuity and mixture in every sense.

But better still is understanding this as a consequence of having lived the street not as interstitial, not as a functional/operational leftover consecrated to mere logistics, but as a human environment in its own right. And it’s still hard to find a better guide to this environment than Bernard Rudofsky’s 1969 Streets for People.

Subtitled “A Primer For Americans,” Streets was Rudofsky’s desperate attempt to impart something of the delight he took from the portici, ramblas and impasses of Europe (and in the Arabian suq) to an audience he obviously thought too car-addicted and philistinated to benefit from anything less than a frontal assault on their sensibilities.

The argument at the book’s core is that, for a variety of reasons, urban spaces on the North American continent have never afforded their residents the myriad pleasures of genuine street life, in which features of the cityspace are devised not merely to afford pleasure, but to be conducive to a life simultaneously more convivial and more considered.

Rudofsky’s work is magisterially cranky, and it is perfectly valid to criticize it as essentially fetishizing the daily life of the Other. Too, Rudofsky understands his self-assigned mission civilisatrice to be a hard sell to an audience inured to the worst that mid-century America had to offer, and it makes him defensive; in places, his entirely justifiable stance is on the verge of being undercut by the bile in his voice - a overly-healthy admixture of what we would now call “snark.”

But I wouldn’t want you to let that get in the way of finding it useful, let alone enjoying it. Streets is full of passages celebrating the quality of pedestrian experience in a world utterly vanished and subducted beneath “modernity” - and what a sense of what we’re missing in everyday life emerges from them! Here’s Rudofsky on a terribly civilized-sounding Italian amenity known as the albergo diurno, or “day hotel”:

It flourished in the years between the world wars, a time when organized tourism did not yet rear its ugly head, and hotels were few and far between. In order to fit into the already crowded pattern of the street, it was put underground, much like a subway station. It suits the footloose; after a bath in a man-size [sic] tub, he [sic] can take his siesta while his clothes are pressed and his shoes are repaired, or shined to a gloss.

A MetroNap kind of pales by comparison, doesn’t it? And this is just a single one of the pleasures afforded by the richness of street life.

What Rudofsky does not allow himself to say, will only allude to with vague and indistinct gestures, is that these pleasures often have more than a tinge of eros to them.

When you when you surrender yourself to the street, you are also opening yourself to the possibility of meeting a work of art, a cuisine, a sound, a momentary juxtaposition, or especially a person, that bears a nonzero chance of utterly derailing your life: vectors that could take you up and entirely out of the life you thought you were living, for better or for worse.

And, at least where men were concerned, these possibilities of the street classically concerned the exercise of sexuality - not merely the predictably mercenary transactions in the shadows, or those involving passing through certain neon lit entryways, but a certain quickening of the pulse and all-but-imperceptible shift of pelvic geometry that accompanies walking alone through the streets of a city one has never before known. For American men of Rudofsky’s generation, this heightened intensity was the secret meaning of the European street, and of the “sophistication” they found there.

I think it’s worth pointing out here, as an aside, that, as a consequence of vastly lowered barriers to access, Americans have to look much further afield for the exotic Other these days. Thanks to improved logistics and plummeting airfare, the culture has utterly lost the frisson of libertinism that used to be imparted by the words “Dutch” or “Swedish.” (Maybe “Rio” or “Bangkok” still carry the faintest leering trace of it.) What happens when even the Mysterious East loses its erotic sheen and aura of potential becoming?

This is only one of the ways in which history has caught up with and overtaken Rudofsky, who was writing in the interval between Death and Life of the Great American Cities and the publication of Holly Whyte’s Social Life of Small Urban Spaces; his pleas for a decent cup of coffee and a liminal place in which to enjoy it, especially, ring a little hollow in a day when Starbucks outlets and other would-be “third places” are well-nigh inescapable.

There’s also the deeper, harder-to-address issue that most of the things celebrated in Streets are finally just that: things. It seems to me that one could kit out just about any American city with the full retinue of Old World paraphernalia and still not realize any gross improvement in quality of life, since they’re being situated in a social context in which evening promenades and siestas are anything but normative.

Just as translating the word dérive into English - “stroll” - divests it of much of its insouciant glamour, merely injecting the physical furniture of the European Old City into (say) the New York streetscape would hardly elicit the alteration in subjectivity Rudofsky clearly wants to accomplish. We bear the imprint of our Calvinist and Taylorist predecessors far too vividly for that, I fear, and the armature of ambient informatics we now live within of course only makes it harder to justify (or even achieve) unclocked, unaccountable time.

But obsolescence, latent phallocentrism, and wishful thinking aside, Rudofsky is onto something; almost forty years downstream from Streets, the sheer enjoyment afforded by sitting on a Geneva plaza for the space of an unbranded café au lait, or strolling the busy, foodstall-lined boulevards of Seoul at midnight, rivals any experience the North American urban environment has to offer. And the question I’d want to set before any would-be digital intercessionary is this: how will your intervention enhance the quality of street life here (wherever that “here” should happen to be), in a way that’s both fructifying and true to what has gone before?

3.

Whatever solution is arrived at, whatever model of the street is offered, I hope it’s better than the one inscribed in the public space which has most supplanted the street, the mall.

To Henri Lefebvre, a street was at least in part an “incision/suture” simultaneously dividing and connecting two adjacent but heterogeneous realms. But that presupposes a real heterogeneity; mallspace ultimately turns the street in on itself, making of it a sealed topology, a closed loop of circulation between highly self-similar (commercial) destinations.

And when this model is reimported into the fabric of an actual city? We know what that looks like: it’s the repeating module of Dunkin’ Donuts, nail salon, cellphone outlet and bank branch that now constitutes the basic element of the Manhattan street grid.

What happens to the barely subtextual eros of the street life Rudofsky celebrated under conditions like these, and the joi de vivre it gave rise to? They die. In my reading, it’s precisely this which the mall and the contemporary North American street are trying to suppress (and ultimately, to kill). In their stead is the street reduced to joyless functionalist thoroughfare, something that might as well be given over entirely to vehicles - and autonomous ones, at that.

Happily, though, we have a new and powerful set of tools at hand. And one of the hopes I have for the superimposition of the virtual onto the physical space of the street is that it will reactivate its inherent capacity for mystery, enjoyment, volatility and novelty. At risk is the entire upside of the bargain that has made cities endurable for millennia - if we fail at this, we fail big, and in a way that won’t be so easy to recover from.

First-round Projects followup

February 16th, 2007

Thanks so much for sharing your projects last night. Kevin and I were generally impressed with the tenor and quality of the work, and are enthusiastically looking forward to the further development of your ideas.

Those of you who for whatever reason did not get to present this week should get me some kind of outline by Saturday, and be prepared to show your work in class this upcoming week. Also, if there are any resources mentioned last night that you need help tracking down, or if you feel like you need additional help otherwise, feel free to ping me.

Additionally, I’d appreciate it if, wherever possible, you could include links to your project materials in comments here. See you next Thursday.

03. Door

February 3rd, 2007

We’ve discussed some of what a wall does, some of the ways in which walls function to divide one space or place from another.

If a wall imposes a crude, binary distinction on people - you here, and you over there - the fact of a door in that wall at least suggests the existence of a third category of people, those with the status to pass from one side to the other at will. Unless the door proper is absent, or is constructed in such a way that it is incapable of being closed, it makes of a wall a semipermeable membrane, through which those duly empowered (adults or free people or even simply anyone with the right keys) can pass.

This is the raw essence of differential access, of what I’ve elsewhere called differential permissioning. The manifest presence of a door inscribes in an otherwise mute wall a statement that some people may pass through it, at least occasionally, and we know how the force and weight of a wall’s spatial proscription are redoubled when one is aware that others are not bound by it.

A door very frequently implies the existence of a corresponding key, both of which work together as a system regulating and metering the physical flow between spaces. Of course, a key needn’t any longer be anything as crude as a physical object. It can be a numeric code, a thumbprint, a voice- or retina print. It can be some other unique biometric signature, or any combination thereof.

The degree of subtlety in access control can be taken further still: the subject of such biometric methods needn’t even be aware that data sufficient to permit their recognition has been acquired. However crude or refined, though, the explicit goal of these methods is to ensure that “authorized people, and not just their credentials” enter restricted areas.

So at the very least, we’ve begun to sketch out a taxonomy in which there are doors that open for some people some of the time, and those that open for some people all of the time. What might be communicated by the difference between an open door and a closed one?

This is from Denis Wood and Robert J. Beck’s Home Rules, an idiosyncratic but absolutely brilliant work of ethnography that abstracts from the objects and spaces of a suburban home the unwritten (and ordinarily unenunciated) rules that govern interactions with them:

Immediately the door is under the sway of the taxonomy of values it materializes (stranger/acquaintance, food/trash, fresh air/smoke, noise/quiet)…and the door serves also to maintain the climate of the house (the quality of its air) and the climate of the home (is it “family time,” or can Frank come out and play?). The door is a valve, but it is also a sign of receptivity.

An open door is surely, at least in part, a performance of availability. Indeed, the phrase has passed into the language as a metaphor for a putatively relaxed style of institutional management, in which subordinates are supposed to feel that they have direct access to their managers, however many echelons up the chain of command a given manager may reside.

Some early projects in context-aware applications, not entirely unreasonably, inferred from the status of an office door something about the occupant’s state of mind. You close the door to your office, in other words, and the system infers that this must be because you want privacy, so it automatically sets your phone and IM status to “unavailable.”

But inevitably, things are more complicated than that - and this is that devil in the details, the gremlin that gnaws away at the best-laid plans of bright-eyed ubicomp researchers. Rare is the person for whom there is a perfect, invariable, one-to-one correlation between the state of their door and that of their mind. Because, to invert Wood and Beck, a door may well be a sign of receptivity…but it is also a valve.

Fresh air, light, the distant babble of others’ conversation, these are things that one might conceivably want to open one’s door to precisely to facilitate some process that must not be interrupted. (The babble of conversation? Sure. Haven’t you ever taken your work to a coffeehouse precisely because it was silence and the isolation of solitude that was inhibiting you?)

In the absence of other cues, then, we can see that it may not be such a good idea to model a user’s interiority from the momentary state of their door, to couple too closely in code things which are in life often unrelated. Rather than conniving in the artless reification of something inferred (and that from the sketchiest of data) by making it a symbol, it’s probably better to let a door be a door.

A final thought about doors. Arriving at a door very often, and appropriately, provokes a moment of self-consciousness at the transition between two states. We still perform rituals at the threshold, to acknowledge both the moment at which the intimacy gradient of the home reaches its degree zero and mingles with the space of the street - a friend used to recite the mnemonic “spectacles, testicles, wallet and watch” to himself upon leaving the house each day, thus ensuring that he had all the named items on his person before committing himself to the wider world - and the moment of return. There is no reason to imagine that, however our doors come to be instantiated, we will ever cease to mark our awareness of the gravity attendant on our passing through them.

Housekeeping notes, 02 Feb

February 2nd, 2007

- I forgot to mention last night that I won’t be in class this coming week - I’ll be speaking at the LIFT conference in Geneva, but will be available via email if anyone needs to get in touch. (And if I could bring you-all back some fondue, I would.)

- An early heads-up - consider yourselves guests of honor.

- Remember to use the urbancomputing tag on del.icio.us and Flickr to annotate sites and artifacts of interest.

- Something David and Soo-In mentioned in passing last night, and directly relevant to Kevin’s point about skins, that I think many of you will enjoy: KieranTimberlake’s SmartWrap, the (ahem) “building envelope of the future.”

OK, keep an eye peeled for Door, going up tomorrow, and I’ll see you in a little under two weeks.

02. Window

January 26th, 2007

If we understand a wall to be in some sense a barrier, and a moment of more-or-less sharp discontinuity between different states, any window in that wall muddies the distinction. A window is connection, and communication in its deepest sense. It is to say that this space, however and for whatever reason we’ve chosen to demarcate it, is in some way continuous with another.

We can distinguish between an open window, a free aperture between spaces, and a closed one. Where the former is promiscuous, the latter admits only differentially: information certainly, and energy, but not matter. Or sound, but not light. The variations are many, and are only multiplied by the new informational channels we have at our disposal.

To an inventory of effects that includes emplacing, opening and closing a window, we can also add screening or baffling. These are tactics we use to further filter what comes through, in the name of comfort, productivity, or something harder to pin down.

Neither is this always an uncomplicated desire. In the words of former New York Times architecture critic Herbert Muschamp, such veiling is a “device that conveys the conflicting desire to conceal and reveal.” He lists “[s]hadow, translucency, reflection…blurring, shimmering, vibration, moiré, metting, layering and superimposition…” as some of the ways this desire is instantiated in contemporary design. (”Metting”?)

While there are many ways in which windows are absolutely indispensable to regulating the urban experience - think of how we use them to modulate the flow of air of different temperatures, scents, and humidities, or the noise and life of the street - for the time being, I want to confine our consideration of them to their qualities in the visual register. And in particular, to these three affordances: looking out, looking in, and looking through.

Looking out

The geographer Jay Appleton suggests that as a consequence of our evolutionary heritage, there exists in human beings (as in other primates) an identifiable “savannah preference” - that “within a given landscape, preferred locations are found at interfaces between prospect-dominant and refuge-dominant areas.”

Stripped of its jargon, what Appleton’s model is suggesting is this: we feel best when we are able to observe a wide swath of the world from a place where we know ourselves to be sheltered, as a gracile protohominid might have when surveying the African savannah for the approach of predators from the safety of a reasonably high branch.

This theory, it should be admitted, is not uncontroversial; the ascription of contemporary human preference to the features of a biome we last inhabited some two million years ago is regarded as a little iffy in many quarters, if not outright problematic. But even if it lacks literal truth, Appleton’s construction still tells us something useful about the likely contours of affective response to the simple architectural fact of a window.

In fact, it is hugely enjoyable to sit in a place of comfort and safety and gaze out onto the city. This has always been recognized as one of the prime pleasures of metropolitan life, enshrined in architectural features as diverse as bay windows and sidewalk café terraces. There’s no doubt that this will continue to be realized in the informatic context; the only meaningful question remaining concerns the specifics of implementation.

Looking in

This is a description from sociologist Hernan Vera’s 1989 paper, “On Dutch Windows”:

In The Netherlands, living room windows are big, left uncovered day and night, and elaborately decorated. This pattern, which is widespread in all urban and rural regions in this country, disappears abruptly as soon as the border into Germany is crossed, where windows are generally smaller, consistently covered, and more sparsely decorated. Going south into Flanders, the disappearance of open and decorated windows is gradual but noticeable.

We likely associate this with a certain sense of easygoingness, the vague residue of what we know (or think we know) of Dutch life, with its hash bars, free bicycles and red-light districts. We might also hear distant echoes of Jacobian “eyes on the street,” and the largely benign feelings Jacobs’ description of surveillant practices on her block of late-fifties Hudson Street tends to stir in her readers.

But compare it to the section on “Accountability” in the influential “character ethics model” promulgated by former Ohio Secretary of State (and Christian fundamentalist) Ken Blackwell during his time in office:

High-character people scrutinize themselves and welcome the scrutiny of others…Isolation breeds temptation to unethical conduct. High-character people resist this chain reaction by adopting transparent life- and work-styles that invite inspection.

That open window suddenly takes on a different valence, doesn’t it? Whatever else it may be, by virtue of its having once established a channel of communication, a window is always also an opportunity for those outside to look in.

It’s in this context that they often enable what sociologist Gary T. Marx calls “border crossings,” or irruptions of information in an unexpected context. Such a crossing happens, according to Marx, any time “the expectation by people that parts of their lives can exist in isolation from other parts” is violated, and as Blackwell implies, it’s just this isolation which is impossible to fully enact in the presence of a window. If a wall distinguishes private space from public, a window is what activates our consciousness of the distinction.

Looking through

For most of us, television was our first window after the literal. Television, also, let the sights and sounds of another place enter this one; this is what pundits meant when they referred to the conflict in Vietnam as the “first living-room war.” What nobody seems to have fully understood at the time was that the familiar wood-grain cabinet television, with its unyielding mass and pride of place in the family room, was merely an early instance of a class that would go on to infiltrate a riotous diversity of spaces both public and private. A display screen - any display screen - is at least potentially that same kind of aperture onto the distant other, whether that screen belongs to a handheld device, a printed page or a building front, whether it overlooks Shibuya intersection or a urinal. Nor need a window open onto any actual place; in the Russian Orthodox tradition, ikons are understood as windows into heaven.

Just as we observed in class that a digital wall need not be perceptible - that what is new in our age is that the ability to block traffic across or access to a given region has been progressively decoupled from materiality - so here is the ability to open a window between places dematerializing. (Remember, too, that connecting the distributed components of a system to a network means that action here affects the situation there, no matter how arbitrarily far away “there” may be.) In such a milieu, “what is on the other side of this wall” takes on new meanings, suggesting that we may need to redefine what we mean by adjacency.

This was the message of the 1980 art installation (or “public communication sculpture”) Hole-in-Space, in which an apparatus of cameras, real-time transmission cables, and display screens produced a rupture through the 3,000 miles and three time zones separating New York City from Los Angeles. (The creators of Hole-in-Space regarded the fact that their work contained no provision for seeing oneself - that, in other words, it acted like a “real” window, and was not also a mirror - as crucial to its success. Would we be so restrained now, especially now that we’ve reimagined something that was an artistic provocation in 1980 as workaday “videoconferencing”?)

But calling something a Hole-in-Space can seem like a little bit of a cheat when you can’t actually reach through it. What happens when one can move or pass objects between spaces, or even exert some of the perquisites of physical presence in more than one place at one time? We’ll take up these questions next week, in our consideration of Door.

01. Wall

January 26th, 2007

What is a wall?

Its fundamental principle, of course, is division. Here from there, inside from outside, yours from mine - but even before any of these, somewhere from nowhere. The act of asserting a wall is the ritual and practical inscription of difference into an otherwise smooth and uncalibrated void, and the beginnings of place. It’s not unfair to say that the city begins here: in Latin, the very word for a city, urbs, originally refers to the stones of its walls.

Walls needn’t consist of very much at all. Sometimes, indeed, they are little more than lines drawn in the air; think of the velvet rope outside an exclusive club, or of eruvim, the wires strung by Orthodox Jews to demarcate ritually enclosed territory. By consensus, by social convention, such markings have much of the force of their more condensed equivalents elsewhere.

Where walls are more substantial, though, they tend to be conveniently vertical, and thus suitable for the presentation of imagery to members of an upright species with forward-facing eyes. We have always used walls to store and convey information, whether that meant telling stories, marking time, making a name, spreading the word, or remembering the fallen. (Lest we forget, they’ve also quite often been used to further somewhat less noble pursuits.)

Without coming anywhere close to being comprehensive, we can specify that walls contain, exclude, defend, bolster, even create.

Walls always set up flows orthogonal to those impinging on them; wherever there is a wall, you can be sure of finding some force - a wind, a wave, an exodus - diverted at ninety degrees, forming eddies, undertows, cross- and countercurrents. We all too commonly emplace walls with the intention of containing turbulence, forgetting that they also, in the most rigorous physical sense, cause it: differentials of pressure and temperature, compositional heterogeneities, entire ecologies spring up in their wake.

We like to flatter ourselves, though, that these phenomena refer to the flow of inert things, particles or packets, and that we ourselves cannot be so described. How do people react to the presence of a wall? This is Michel de Certeau, in the “Walking the City” chapter of The Practice of Everyday Life:

First, if it is true that a spatial order organizes an ensemble of possibilities (e.g. by a place in which one can move) and interdictions (e.g. by a wall which prevents one from going further), then the walker actualizes some of these possibilities. In that way, he makes them exist as well as emerge. But he also moves them about and he invents others, since the crossing, drifting away, or improvisation of walking privilege, transform or abandon spatial elements. Thus Charlie Chaplin multiplies the possibilities of his cane: he does other things with the same thing and he goes beyond the limits that the determinants of the object set on its utilization. In the same way, the walker transforms each spatial signifier into something else. And if on the one hand he actualizes only a few of the possibilities fixed by the constructed order (he goes only here and not there), on the other he increases the number of possibilities (for example, by creating shortcuts and detours) and prohibitions (for example, he forbids himself to take paths generally considered accessible or even obligatory). He thus makes a selection. ‘The user of a city picks out certain fragments of the statement in order to actualize them in secret.’

A wall, that is, is not a wall until someone fails to walk into it. Its power to contain, demarcate or deny is something that gets enacted on a moment-to-moment basis - or, in being challenged, fails to get enacted. Here we understand the pedestrian as someone active, someone invested with creativity and agency. For that matter, the wall, too, possesses agency; things, it turns out, are never just things.

So it’s really in the interaction between one or more human beings and the physical fact of a wall that all the richness we’re interested in is generated. We begin to get the sense that a wall can simultaneously be understood as an object, an obstacle, and an agreement. This is only complicated (or emphasized, or obscured, but never undone) by the sensors that may now be embedded in a wall, by the screens that may be emplaced on it, by its prospective endowment with the ability to deform in response to conditions local or arbitrarily distant.

If we are truly in an age when bits rule over atoms, then surely our walls are becoming virtual as well. What will we choose to mark with them, where and how will we emplace them…and what can we expect them to look like?

Introduction to Urban Computing

January 25th, 2007

So. “Urban Computing.” What exactly do we mean by that?

The stock phrase I’ve been repeating for four months now is this: “This class will investigate both the urban architectonic and the nature of metropolitan experience as they evolve under the condition of ambient informatics.”

Pretty clear as it is, but maybe it could still stand a little unpacking?

- By urban architectonic we mean the city considered physically, as an object which possesses both structure and function;
- By metropolitan experience we mean everything that makes big city life particular in its subjective, psychological, emotional and affective dimensions;
- And by ambient informatics we mean an emergent, post-PC paradigm for computation, to be found anywhere distributed, networked information-processing resources are found. (This might mean platforms and interfaces as simple as mobile phone, as elaborate as Minority Report-style ubiquitous computing, or something still more advanced).

So, putting it all together: we will be building the city up from an array of primitives - physical patterns or archetypal situations, of which you’ll see a listing at left - asking what set of functions each has served over time, how people have used and understood them over the history of human settlement, and what happens to each of them when computation saturates the urban environment at every scale. We want to consider them both in isolation, and in their interaction; our intent is to privilege neither the virtual nor the actual, being much more interested in how these two conditions inform, interpenetrate and condition one another.

Before you say anything: it’s absolutely true that there is no such thing as The City, only cities. Wherever possible, we’ll be grounding our abstractions in actual/historical time and space.

Now, some admin notes.

First and most importantly: your active participation on this site will be considered in determining your grade. Each week, you will be asked to read the essay and respond to it as you see fit. You may leave comments on the parts of the text most resonant to you, use any part of that text as a point of departure for your own insights, upload an image or video clip to the media scrapbook, comment on an object already to be found there, or any combination of the above.

Your contributions will be indexed and tallied, but honestly, we’re more interested in quality than in quantity. Every word and image you post on this site will be viewed by either Kevin or myself, and most probably both of us. We’ll spend enough class time demoing the site to ensure that everyone’s comfortable with it, but bottom line is this: there’s nothing here that should surprise you in the least if you’ve ever posted or commented on a blog before. Which, we assume, is all of you.

You will be responsible for two or more class projects TBD. Assume a certain formal openness here as well: these could be written papers, prototypes, physical models, visualizations, executable programs or scripts…within reason, you name it, as long as you’ve secured our prior approval.

Please note that this is very much a hands-on class - or, more properly, a feet-on class. We expect you to spend a lot of time out in New York, or any other conurbation you’re able to get to between classes, thinking deeply about space, place and interface.

Check the Bibliography for a list of suggested texts. We’ll be building individualized reading plans for you over the course of the semester, but this will give you a sound idea of the kinds of things we’ve read and with which we will be expecting you to familiarize yourself.

You should also know that I hope to take what we will be learning here, at every level, and build from it a networked book called The City Is Here For You To Use. But more about that later.

For now, let me simply welcome you to ITP’s class H79.2622, Urban Computing, for the Spring Semester of 2007. We hope you’re as stoked for this as we are, which is “a lot.”

- AG