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A passenger aircraft is composed of several millions of parts and requires thousands of persons to assemble. A four-lane highway bridge is another example of complexity. The first version of Word for Windows, a word processor released by Microsoft in 1989, required 55 person-years, resulted into 249,000 lines of source code, and was delivered 4 years late. Aircraft and highway bridges are usually delivered on time and within budget, whereas software is often not. Discuss what are, in your opinion, the differences between developing an aircraft, a bridge, and a word processor that would cause this situation.From this statement in this question, it is concluded that the software systems are not only complex system but there are others complex system like aircraft manufacturing, bridge manufacturing. Now, I add some point which can ensure that why the manufacturer or developer deliver the complex system like aircraft