Cover Page by Suzanne Robertson, James Robertson

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15. Reusing Requirements

in which we look for requirements that have already been written and explore ways to make use of them

A few days ago, one of your authors needed to know how to do something on his computer—how to type the symbol for degree, as in °C for Celsius temperature. I knew that other people must know this, so I headed to the Mac support forum. I entered my search term and found a thread where some kind soul had previously answered this question. So now I could reuse knowledge that someone else had provided at a previous time.

We all reuse knowledge—the note that you left on the heating system to remind yourself how to restart it; the post that a blogger made about the best way to get a red wine stain out of the carpet; a cooking ...

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