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-In this case, I think about the spiral model,
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-2
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-and evolutionary prototyping model will work. Definitely you don't want to
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-have a pure water from water. Why? Well because it
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-is very expensive with a pure waterfall model to make
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-changes during the course of the project, especially changes
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-that involve requirements. Why? Because we saw that it can
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-be very expensive. Whereas with the spiral model, we saw
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-that being iterative, we can actually make correction throughout development.
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-Similarly, with evolutionary prototyping, we keep evolving our system
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-based on the customer feedback. And therefore, if something changes,
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-we will get feedback right away, and we will
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-be able to adapt. So the key thing here is
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-that anything that is iterative works better in the
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-case of changing environments. So, situations in which your requirements,
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-the situation, the project might change. Whereas waterfall is
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-more appropriate for situations in which the requirements are stable,
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-we know the domain, and possibly we also know the technologies involved.