Picks up where Sterling's Siggraph keynote of 2004 leaves off. That is available at: http://www.boingboing.net/images/blobjects.htm
Excellent stuff. Crammed with ideas. Sometimes his terminology and neologisms are a bit dodgy - he also forgets to explain that a SPIME is a 'speculative imaginary' object.
"Rapid prototyping is a form of brainstorming with materials. It's not simply a faster way to plunge through older methods of production, but a novel way to manage design and production. By previous standards, it looks as if it is profligate, that it "throws a lot away"- but with better data retention, "mistakes" become a source of wealth. Rapid prototyping seen in depth is an "exhaustion of the phase of the problem" - it isn't reasonable, thrifty or rational, but it has the brutal potency of a chess-playing computer." pp. 48.
There is some great stuff on the evolution of human engagement with objects: artifacts, machines, products, gizmos, spimes and biots. A nice diagram on the mirrored S-curve of technological adaption, too.
Sterling, B., Shaping things. 2005 (The MIT Press: Cambridge, Massachusetts).