Re. the bridge analogy in the article: we had a bridge being built behind our building at work and they had announced the opening date a year in advance. Sure,

Re. the bridge analogy in the article: we had a bridge being built behind our building at work and they had announced the opening date a year in advance. Sure, when the date came the bridge was opened exactly on time. I was walking with my colleague across it and asked him, "How come we can't ever predict when we'll be done?". His answer was deeply insightful: "They build the same bridge every time while we build a different one".