This document discusses problems in the relationship between users and designers in technology production. It compares the approaches of Business Process Reengineering (BPR) and Rational Unified Process (RUP) with Participatory Design (PD). BPR and RUP take a top-down, formal approach that designs processes and systems away from the actual use context, while PD actively involves end-users to incorporate tacit knowledge about work. The author argues that both approaches have value and that a successful design process should incorporate relevant aspects of each to build a system that meets the needs of all stakeholders. Representations used must capture knowledge in a way that is meaningful to users, managers, and developers.