LW - Christopher Alexander's architecture for learning by Henrik Karlsson

Welcome to The Nonlinear Library, where we use Text-to-Speech software to convert the best writing from the Rationalist and EA communities into audio. This is: Christopher Alexander's architecture for learning, published by Henrik Karlsson on March 24, 2022 on LessWrong.
On the 17th of March 2022, Christopher Alexander, the architect and mathematician, passed away. Alexander, whose intellectual influence extended far beyond architecture and urban planning, gave the impetus to several central ideas in modern software development, such as wikis, agile, and object-oriented programming. But his main contribution was in vernacular architecture – that is architecture without architects – where houses are built gradually by the people who live in them.
To honor his memory, I would like to take this moment to reflect on some of his ideas in the area where he has influenced me the most: on how architecture can unlock learning in society. How can we best make sure that the knowledge we need is sustained over generations?
For knowledge to pass from one generation to the next we fundamentally need three things. Firstly, we need ways for the young to access the environments they are to master so they can learn through imitation. Secondly: for skills that are hard to learn through imitation, we need deliberate instruction. And finally, for emotional support, we need houses where children can seek refuge from their families or get support when their parents are busy.
These points are not original on their own; schools try to do at least the last two. What is more interesting is how thoroughly Alexander went about solving it. He proposed not a new type of school but a series of architectural patterns that would weave the functions into the very fabric of society. Access to environments, deliberate instruction, and safe homes would be a seamless part of everything – an "educational system so radically decentralized” that it “becomes congruent with the urban structure itself."
At the heart of this was a pattern he called network of learning.
Network of learning
The book where Alexander most clearly lays out his ideas about learning is in his 1977 cult classic A Pattern Language: Towns, Buildings, Construction, which he co-wrote with Sara Ishikawa and Murray Silverstein.
It is a peculiar tome: a choose your own adventure for how to build a modern medieval city-state.
It is quite dizzying in scope and detail. Together with its companion pieces, The Timeless Way of Building and The Oregon Experiment, the book spans 1912 pages and contains 253 architectural ”patterns”. Each pattern describes “a problem that occurs over and over again in our environment, and then describes the core of the solution to that problem, in a way that you can use this solution a million times, without ever doing it the same way twice”. These patterns range from the world defining to the mundane – from how to beak up the countries in the world into city-states and incorporate them in a world federation to how to keep weeds from stone walls and what colors to use to make a room homely (red, yellow, and brown!).
The patterns are mostly derived from close observation of places from the past that not only function well but are full of life – Alexander and his students were practicing a sort of ethnography of vernacular architecture.
The most fundamental educational pattern in the book (18: NETWORK OF LEARNING) is derived from Ivan Illich, the catholic priest and historian famous for his critique of institutionalized care. Illich had purposed turning schools – the epitome of institutionalized care and its ills – inside out and bringing forth instead learning webs. Alexander took this idea and turned it into a design pattern. The way he did this is akin to how an object is created from a class in object-oriented programming: he created an instance of the Illichian idea, by pasting several page long quotes, and then he set about modifying it. I will return to how he modified it...