Support or attack the following statement: Evaluation of the quality of a user interface design must be done by the actual users. Hence, it cannot be done until the product is delivered.

Describe three metaphors used on the Facebook site (www.facebook.com). Be specific. Do you feel each metaphor is used in an appropriate way? Justify your answer.

What is the main benefit that a program design language provides over other construction-design methods? Justify your answer carefully.

One of the items in a full description of a design pattern is Known Uses. Why is this item valuable? Justify your answer.