At the 2002 Annual INCOSE Symposium Joseph Kasser's presentation 'Does Object-rnOriented Systems Engineering Eliminate the Need for Requirements?’ provoked a livelyrndiscussion and his conclusion that there was no need for requirements when an object-orientedrnapproach to systems engineering similar to object-oriented software engineering was followed,rnmet strong resistance. This paper briefly reviews traditional requirements. The evolution ofrnobject-oriented programming is presented and the important role of use-cases in the requirementsrnengineering process is shown. On the basis of this information this paper comes to thernconclusion that object-oriented systems engineering indeed will use a different way to cope withrnrequirements than traditional systems engineering.
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