What does it imply to say that two or more people are working together? Write down all of the many ways that collaborative interfaces may be put to use.

Interfaces serve what purpose? Isn't it easier to merely create objects of a class?

Please explain why you think interfaces are preferable than abstract classes.

Explain the concept of user-centered design (UCD) in interface development. How can UCD principles be applied to create more user-friendly interfaces?

Discuss the concept of multiple interfaces in a single class. What are the advantages and potential challenges of implementing multiple interfaces in a class?

Apple's Interface Builder in XCode has a lot of quirks that make it difficult to pick up on your own. Did you find any semblance of logic in the system? What parts of the responses did you find most challenging or confusing? Just how powerful is XCode's interface builder?