Alan Blackwell, Sally Fincher
Christopher Alexander's pattern language provided a way of raising the level of discourse about buildings from a concrete to a new abstract level of description . Rises in abstraction level happen regularly in all fields, but the key difference in Alexander's work was that his abstract descriptions were founded in user experience, not in abstract descriptions of building construction (engineering) or of ornament (style). This is in contrast to recent developments in software patterns, as noted by Molly Steenson in her recent interactions article . In talking about software, it is easy to get confused about the distinctions between…
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