Tag Archives: data

Changing the Environment

The topic of the “smart city” is one that is cropping up over and over again in various streams and sources, as much a sign of the rapidly urbanising times as of how technology is striding ahead purposefully in the city, albeit in a much different way to development in the countryside.
An interesting and captivating article on the BBC News website from September 2013 is a typical example. It highlights the various ways in which residents of some of Brazil’s favelas use a combination of simple (kite) and new (smartphone and camera) technologies to map out and instigate change in their communities. Much of the new technology associated with smartphones in particular seems to fit snugly into the environments of these dense social worlds, and it would appear that the people living there are by themselves able to modify and improve their surroundings by simple means, rather than by edict from above.
Nevertheless, one interesting facet that appears time and time again is that at some stage, no matter how intricate the technology, there is always a human node, a gatekeeper perhaps, or at the very least a transition stage through which the information has to pass, and who consequently and inevitably has an impact on the form and shape of the data passing through. Information is selected, favoured, filtered as it flows: all these macroscopic changes that are seen at the end of the day come from microscopic inputs and manipulations along the way.
It is at this stage that once again technology intersects with psychology, economics, and geography, and is presumably the reason why even an identical technical solution in one location is bound to have a very different flavour when applied to another. Changes start at this microscopic level and then propagate outwards: after all,  how can individuals change the flow of a city in a substantial way? By moving away from a roundabout, spreading news about congestion, proposing or crowdsourcing an easier route, anything that will change people’s behaviour might be said to influence the currents of a metropolis. By logging in at a specific place, a reference, a rapid dispersion of a key event, this might trigger further steps and stops down the line, if only enough connections are fired up.
In cancer there is talk of a microenvironment, and if you want to influence the tumor it is really necessary to focus on what goes on at the microenvironment level rather than just the systemic (with therapies to match). The interaction between individuals and the environment is not that different: there are systemic changes that will influence all city-dwellers (e.g., the weather: some more, some less), and then local/microenvironmental changes (street-related, drain-related, connections, internet, maintenance) that have an impact on groups, how individuals interact with groups, and consequently how localities shift. Most normally I suspect that this results in local oscillations, and minor changes in a specific locale do not have much of an impact on neighbouring areas, let alone spaces on the other side of a metropolis.
Sometimes, however, an idea might catch hold and spill over from one region to another. Again there is an analogy in the natural world: systems that change might reach a critical mass, a certain power and influence that by its very nature causes a shift away from equilibrium in spatially distant zones. And here again is the key influence of the human element: any geography story always contains elements that can be used in a human story, the psychogeography, trying to pinpoint and define specific focal points, corners, familiar pavements that serve as anchors for an individual. Unlike what is normally found in physical systems there are dotted lines between individuals, a certain tunnelling of ideas across social and spatial divides, that can distribute change in a multitude of often unexpected ways, and eventually takes over society like a slowly creeping bacterial colony across a petri dish.

Bodele Depression

As someone interested in geography (and pretty pictures), I used to be on a mailing list run by NASA which showcased the most stunning and intensely thought-provoking satellite images of natural phenomena. One of the images and accompanying stories that has stayed with me since I first saw it years ago was of a region in Chad called the Bodélé Depression.

Although visually striking, what really captivated me was the mechanism behind the combination of wind and earth that is this natural conveyor belt, located at the southern edge of the Sahara, at the lowest point in Chad in central Africa. To quote from Wikipedia:

“Dust storms from the Bodélé Depression occur on average about 100 days per year … [a]s the wind sweeps between the Tibesti and the Ennedi Mountains in Northern Chad, it is channeled across the depression. The dry bowl that forms the depression is marked by a series of ephemeral lakes, many of which were last filled during wetter periods of the Holocene. Diatoms from these fresh water lakes, once part of Mega-Lake Chad, now make up the surface of the depression and are the source material for the dust, which, carried across the Atlantic Ocean, is an important source of nutrient minerals for the Amazon rainforest.”

This last sentence is the frankly rather unbelievable key to the story, and deserves closer scrutiny. In work published in 2006 (and subsequent reports), it was shown that

“…about half of the annual dust supply to the Amazon basin is emitted from a single source: the Bodélé depression located northeast of Lake Chad, approximately 0.5% of the size of the Amazon or 0.2% of the Sahara. Placed in a narrow path between two mountain chains that direct and accelerate the surface winds over the depression, the Bodélé emits dust on 40% of the winter days, averaging more than 0.7 million tons of dust per day. … About 40 million tons of dust are transported annually from the Sahara to the Amazon basin. Saharan dust has been proposed to be the main mineral source that fertilizes the Amazon basin, generating a dependence of the health and productivity of the rain forest on dust supply from the Sahara.”

Bodele_depression

As an analogy for what a single person or small group of individuals can do in the new era of digital media, this natural phenomenon seems to me to be unsurpassed.

Big data (2)

In this Analysis podcast, several themes come up relating to media and big data, data, privacy, secrets, and who controls and distributes each of these (government, media, individuals).

The interesting comment is that in the 20th Century framework, ideas, philosophies, and causes were promoted by groups which nucleated around an idea (political parties, unions, etc.) and derived their main strength from “strength in numbers” and could thus influence policy or decision-making generally. Today, things appear to have become more granular: it is possible for an individual to make waves without the backing of a party, and ideology has thus reached a much higher level of granularity than before, highly dependent on the individual.

The government has reason to fear the individual, just as the individual has reason to fear the state.

Big data (1)

Bringing together several strands of thought (society, geography, technology, behaviour) the following BBC Radio 4 podcast on The Bottom Line provoked some thinking on how changes in monitoring and networking (in many different contexts, mainly digital) are affecting how we behave.

The most fascinating part, it would seem, is the effect on behaviour. This has an impact on both the individual and society: each individual modified their behaviour (slightly (due to monitoring of some vital sign, for example), and by changes in aggregate behaviour one can observe changes in societal behaviour and modes. There are counter-balancing trends as we yield to a networked digital world, with demarcations and fences, as well as benefits of large datasets.