"The trick generally is to break programs into pieces and have those pieces be individually testable and so then when you move on to the other pieces you treat it as a black box knowing that it either works or doesn't work."

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As for breaking up, once the relationship is over, you never really know what went wrong; you just feel nauseous whenever the subject comes to mind. After a plane crash there's the black box that tells the FAA what caused the crack-up. Too bad there's no black box of relationships.

— Linda Sunshine