In the brief scenario above, how do you know which requirements are related to business needs, and which are more related to software functionality?

在上面这个简短的场景中，你如何判断哪些需求与商业需要相关，哪些需求还与软件功能相关？

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Even if we do, innovators can often replicate software functionality by designing hardware to incorporate the functionality directly.

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There's a slick guide to help you navigate but, most importantly, the slimmed down software sports DVR functionality.

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Word and the other Office programs can access an Office Store, which carries apps you can buy or get for free to extend the software's functionality.

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