What is HCD? How does it differ from traditional design practices? What are the advantages of HCD? What are the limitations, if any, of HCD?

Discuss three factors hindering designers from practicing HCD. Why is there a gap between theory and practice? How could these gaps be resolved?

Discuss the seven fundamental design principles in relation to the seven stages of action. Do you agree with these principles and stages? Which principles or stages, if any, would you add to the process?