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Traditional systems (like wood-plank-keeled boats) have an advantage over innovative systems (like the then-novel plywood trimarans) in that the whole process of maintaining traditional things is well explored and widely understood. Old systems break in familiar ways. New systems break in unexpected ways.

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Because indicators direct one’s activities, you should guard against overreacting. This you can do by pairing indicators, so that together both effect and counter-effect are measured.

– Andy Grove