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Discussion Forum Unit 1A passenger aircraft is composed of several millions of parts and requires thousands of personsto assemble. A four-lane highway bridge is another example of complexity. The first version ofWord 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 highwaybridges are usually delivered on time and within budget, whereas software is often not. Discusswhat are, in your opinion, the differences between developing an aircraft, a bridge, and a wordprocessor that would cause this situation.I might start with the fact that those are three completely different subjects. Basically speaking,engineers design and build different machines or structures. “If you are a civil engineer buildingbridges then all you need to know is about bridges. Unlike this, if you are developing software youneed to know about software domain (because that is what you are building) and you need to knowabout the problem domain (because that is what you are building a solution for).” (Marsic, 2012, p.21) A software engineer develops programs designed to solve economic and other problems, basedon the analysis of mathematical models, with the help of computer technology. He tests and adjustssoftware work.