Problem:

(a) What do you understand by user-centred design and why is it important?

(b) Explain how Prototyping and the Participatory Design approach are useful to the design of User Interface.

(c) What do you understand by the concepts "knowledge in the head" and "knowledge in the world" and what implications do they have for user interface design? Give two examples of each.

(d) You are part of a design team who has been assigned the duty of designing a computer-based system to monitor and control of activities of a nuclear reactor plant.

(i) What do you understand by distributed cognition? Support your answer with an example.