Composition

• “Divide and conquer. Separate your concerns. Yes. But sometimes the conquered tribes must be reunited under the conquering ruler, and the separated concerns must be combined to serve a single purpose.” —Jackson, 1995

• Jackson suggests that many approaches to decomposition neglect to address composition

  • He thinks it should be thought of like four-color printing after color separation is done

• Composition in programs is not as easy as conjunction in logic

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