Requirements engineering-applying theory to reality

A requirements engineering process must take account of the user, the nature of the work, the environment in which that work is carried out and the resources available to the user. Creativity work is essential when designing future systems but should be carefully linked to the lifecycle of the project. Use cases and scenario authoring, though time consuming, provide benefits, both in completeness of requirements capture and in strength of structure. For a "socio-technical system", system goal modelling. must take account of the human perspective.