For the next 306090 book, guest editor David L. Hays wants to know, “What is essential knowledge for architecture?”

This frequently posed question targets fundamental principles of design, those basic criteria and priorities through which disciplinary stability is ensured. Yet, insofar as relevance is a core value of architecture, in both theory and practice, the contingent nature of the future guarantees that some forms of knowledge not presently considered essential will eventually become indispensable.

306090 15 is thus calling for “contributions that envision possible futures for architecture through speculations about new disciplinary knowledge. What specific methods, materials, or understandings—tools, ratios, formulas, properties, principles, guidelines, definitions, rules, practices, techniques, reference points, histories, and more—not presently considered essential to architecture could, or should, define its future? Pertinent knowledge might be previously forgotten, currently undervalued, generally misunderstood, or not yet recognized. Architects have long looked both to the outmoded traditions of their discipline and to other fields altogether when imagining possible directions for their work. In blurring the boundary between essential and non-essential knowledge, this inquiry seeks not to codify the contemporary state of the art for architecture, nor to assert the value of multidisciplinarity, but to envision, and potentially catalyze, new disciplinary approaches.”

This edition, then, will not be about the state of the art; instead, it's about what the state of the art could be, should be, would be, if...

The deadline is 30 March 2012.