I've read a brief summary of the World System A and B concept. It seems like what I have come to expect from Alexander: some reductive rhetoric and claims that he has rediscovered a true, virtuous way of being. I'm not keen on encouraging "them and us" thinking, or cultivating the idea of life as a state of war (the battle for x). I agree in principle that architecture usually gets imposed on users, when it should be made in a participatory way.

Building "according to the dictates of the human heart" is all very well in theory, in practice it sounds like it would translate to an ideal of each family building their own home on a small lot. So where are we in relation to e.g. the left-right political axis? (It seems like Alexander is proposing a bottom-up approach to building and planning, in contrast to something imposed by the state or by corporations.)

If there's one major point I'd make in response to his dualistic picture of the world, it's that there are potentially varying degrees of citizen participation in the design process. A pragmatic approach would be to work on improving participation where possible rather than demonizing the supposedly pure form of "World System B" in categorical terms.

Here's a theoretical tool which presents a spectrum of participation:
http://lithgow-schmidt.dk/sherry-arnstein/ladder-of-citizen-...

If there's more, architecturally speaking, to what Alexander is proposing than just a theoretical opposition between "how things are", and a utopian and backward-looking idea of "how things should be", I think it's probably a potential revalorization of the art-historical categories of "linear" and "painterly".

(For details of "linear" and "painterly" see https://en.wikipedia.org/wiki/Heinrich_W%C3%B6lfflin )

In architecture these really correspond to a "structuralist" emphasis on modularity and interchangeable components on the "linear" side, and an expressive emphasis on overall form and image-making on the "painterly" side.

To give an example of each in its pure form, Hermann Hertzberger is a linear, modular, structuralist guy, while Zaha Hadid would be on the painterly end of things.

Alexander is not proposing Hertzberger-style buildings -- he wants to bring back traditional architecture -- but essentially I think his background is structuralist, emerging as he did from mathematics in the 60s. It's this flavour to his work that makes me feel strongly that he doesn't really care about tacit knowledge and the intangible, non-propositional aspects of architecture, the aspects that just cannot be put into words.

Oppositions are hard to avoid in thinking about this kind of thing, but of course they need to be treated with care to avoid falling into simplistic thinking.

Approaches to architecture are awash with irrational aesthetic decisions, even when they claim to be fully rational. There's a famous book from the 60s called "Architecture without Architects" by Bernard Rudofsky that might be of interest, as it documents the kind of qualities of traditional anonymous architecture (not the elaborate, royal or religious kind).

A final thing that comes to mind is the philosophy of Deleuze and Guattari. They are French post-structuralists. Although, coming from that theoretical milieu, they come out against the binary "arborescent" nature of simplistic thinking based on oppositions, they do allow themselves to introduce a significant contrast: they compare the mode of existence of nomads with that of the state. They talk about the smooth space of nomads as the origin of the (improvised) war machine (essentially, of science), while the striated space of the state is the space of complex social structures and institutions (the university, for example). Their ideas are very rich and thought provoking, popular with architects but potentially still strange and radical at the same time. Their work is evidently a distillation of a huge amount of reading and contemplation. In my opinion Christopher Alexander's ideas look very tame and unimaginative in comparison, and the scope of his thinking appears just disappointingly limited.

Here's a link to a summary which might whet your appetite for Deleuze and Guattari (their writing is also interesting and compelling, but this PDF document just gives the bones of one of their main ideas): http://www.protevi.com/john/DG/PDF/ATP14.pdf