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- It was quite a while since I read the Extreme Programming (XP) mailing list, so perhaps there has been more talk about the concept of the system metaphor in the XP community – but my feeling has been, ever since I began reading about XP and trying to adopt its ideas, that the system metaphor needs to be better understood. Several times I have sensed the opinion that it's great if you can come up with a good metaphor, but if you can't, that's not a disaster. True, it might not be a disaster: If you ignore the metaphor, something will take its place – |