Wednesday, February 25, 2015

Generating a Neighborhood that Works

The essence of successful unfolding is that form develops step by step, and that the building as a whole then emerges, coherent, organized. The success if this process depends, always, on sequence. A building design can unfold successfully only when its features “crystallize out” in a proper order.

Instead of using plans, design, and so on, I shall argue that we must instead use generative processes. Generative processes tell us what to do, what actions to take, step by step, to make buildings and building designs unfold beautifully, rather than detailed drawings which tell us what the end-result is supposed to be.

The step-by-step approach works. The all-or-nothing approach does not work. This is the secret of biological evolution. During the course of evolution, the adaptation of the thousands and millions of variables that must occur to make one successful organism happens step-by-step, essentially one gene at a time. That is what makes evolution possible. It would be impossible for nature to “design” a system as complex as any organism all at once.

What steps do you take, in what order? The most basic instruction I can give you as a guide for a living process, is that you move with certainty. That means, you take small steps, one at a time, deciding only what you know. You try never to take a step which is a guess or a “why don’t we try this?” Large scale trial-and-error, shots in the dark, simply do not work. Rather, you move by slow, small decisions, deciding one thing, getting sure about it, and then moving on.

The crux of every design process lies in finding the generative sequence for that design, and making sure that sequence is the right one for the job. - Christopher Alexander, The Process of Creating Life
The emergence of new structures in nature is brought about, always, by a sequence of transformations which act on the whole, and in which each step emerges as a discernible and continuous result from the immediately preceding whole. New form comes into being. Morphogenesis occurs. New form that is, in almost every case, unpredictable from the initial state, appears smoothly via a sequence of tiny continuous changes. The sequences are not merely smooth. We have a sequence in which new structure grows organically, holistically, from the structure which is there already. One whole gives rise to another. - Christopher Alexander, The Process of Creating Life
Essay by Vera Bradova:

Generating a future that works

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