Along with Hecklerandcoch, I think Tesugen.com is my favourite read at the moment. The writer, Peter, has been reading both Feynman and Christopher Alexander. A heady cocktail, but one that is leading to insights such as this one:
“Nobody has a perfect image of what it is that needs to be built. One’s vision is affected by what one learns by analyzing, building, and experiencing the yet to be finished artifact. New ideas come; some old ideas are discarded. Building is an exploration. Blueprints and prototypes always fall short of the (even unfinished) artifact.”