From user identification to system implementation
Very little 'specific descriptive information is available on how a designer transforms the information gathered about users and their work into an effective user interface design', from (Wood, 1998).
Often work starts with UML (Unified Modelling Language) based object modelling of the system with efficient tools (like e.g. Rational Rose, http://www.rational.com/) taking too little account to early conceptual analyses, user requirements/needs capture and user interface functionality. The risk is near at hand that important properties of the final product with regard to end use are overlooked.
Wood L., 1998, Introduction: Bridging the Design Gap. in User Interface Design. Bridging the Gap from User Requirements to Design. (ed. Larry E. Wood). CRC Press, Boston. 1998. (312 pp) (pp. 1-14).