1. (2 points) Give three examples where menus or forms may be more appropriate than direct manipulation and briefly justify each.

2. (3 points) Suppose you are designing a software to manage your music library consisting of music books, scores, and recordings in different formats. Discuss three different orderings/organizations of the material and justify each.

3. (5 points) Command language interface (CLI) is one of the oldest UI. On the other hand, although people have aspired to have a natural language interface (NLI) almost as long as we had computers, NLI has not been practical for general tasks for a long time. What is your assessment for the future of NLI as a substitute for CLI? In particular: Will the advance of NLI eliminate the need for CLI? What are their impact on usability? How would you evaluate the usability of CLI and NLI? You may want to research this topic a bit by reading a couple of recently published papers on this topic. If so, please cite the paper in your answer.

   Your answer should be in the form of a short essay (or a short research paper) between 1 and 5 pages.

Due Date: