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I interpret DNA as a set of generative patterns. I wonder whether this metaphor can be formulated in a way that is consistent with Christopher Alexander's principles of emergent order.That would certainly be my own preference, rather than equating DNA with "grand design", which I think introduces too many problems - both practical and philosophical.In the past, the Enterprise Architect has been seen as the custodian of "grand design". But I am seeing an important shift in the role of Enterprise Architecture (EA), made possible and/or necessary by SOA. EA constrains the way the SOA developer delivers a project, in the interests of some larger-scale order. But where do these constraints come from? From a general apriori standard universal model (Kant), or from a specific and empirically discovered model (Hume), grounded in the strategic context of a specific enterprise and its customers? My view is that the latter allows EA to align better with asymmetric demand. I wrote about some of this in my most recent article for the CBDI Journal. (Currently available free on registration).http://www.cbdiforum.com/bronze/journal/2005-11/SOA_Governance_Chaos_to_Order_1.php

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