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Design
Using your hands
Gregg Zachary in last week's New York Times wrote a terrific little piece on "a little-noticed movement in the world of professional design and engineering: a renewed appreciation for manual labor, or innovating with the aid of human hands." I talk about it at some length on my End of Cyberspace blog.
Do Not Taunt Massive Quake Ball
As anyone who has built a tower out of blocks or LEGO knows, as they get taller, the more small movements at the base can be magnified into catastrophic motion at the top. This is just as true for skyscrapers, increasingly so as we get closer to building kilometer-high towers.