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The third category of mistakes that I want to

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mention is product-related mistakes. A

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typical example of product-related mistake

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is gold plating of requirements. And what that means is

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basically is that it's very common for projects to have

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more requirements than they actually need. For example, marketing might

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want to add more features than the ones that are

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actually needed by the users. And of course having more

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requirements lengthens the project's schedule in a totally unnecessary way.

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Feature creep is another common mistake and consists in

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adding more and more features to a product that were

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not initially planned and are not really needed in most

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cases. And here there is evidence that the average project

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experiences about a 25% growth in the number of

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features over its lifetime which can clearly highly effect The

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project schedule. Finally, if you're working on a project that

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strains the limits of computer science. For example, because you

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need to develop new algorithms for the project, or you have

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to use new techniques. Then that project might be more research than

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actual development. And therefore, it

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should be managed accordingly. For example,

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by taking into account that you will have a highly unpredictable schedule.