Problems
In 1992, Christel and Kang identified problems that indicate the challenges for requirements elicitation:
- 'Problems of scope'. The boundary of the system is ill-defined or the customers/users specify unnecessary technical detail that may confuse, rather than clarify, overall system objectives.
- Problems of understanding. The customers/users are not completely sure of what is needed, have a poor understanding of the capabilities and limitations of their computing environment, don’t have a full understanding of the problem domain, have trouble communicating needs to the system engineer, omit information that is believed to be “obvious,” specify requirements that conflict with the needs of other customers/users, or specify requirements that are ambiguous or untestable.
- Problems of volatility. The requirements change over time. The rate of change is sometimes referred to as the level of requirement volatility
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