... naturalistic decision making field and in domains such as emer-gency control rooms (Artman and Waern 199 9), air traffic control (Mac-kay 199 9; Cox et al. 2004) and rail network control (Farrington-Darby ... at least plan for that unpredictability, taking task-relevant paperwork ‘just in case’ it is required. Paradoxically, mobilisation work may therefore take place whilst at a static workplace ... and a heuristics evaluation checklist, an adaptation of a task analysis method, assessment against us-ability guidelines, a consumer report and evaluation procedure, and obser-vation based...