1. Our textbook, DTUI, focuses on the spoken/verbal form of NLI. Compare it to other forms of NLI, such as written language, sign language, etc. Discuss the similarities and differences in UI design among these different forms of NLI.

2. How would you evaluate the usability/UX of the different forms of NLI in the above question? Describe your choice of evaluation techniques and usability metrics. Should the same techniques and metrics be used to evaluate CLI? Briefly justify yourself.

3. For each of the 5 IS we covered in class, list at least a couple of IDs that are needed to support the specific IS. Which IS has the most needs for IDs? In addition, when should the decisions about I.D. be made in the UID process? Why?

4. What is the usability of an I.D., as comparing to the usability of a system and its UI? How would you measure it? What kind of data are needed and how would you collect them?

Due Date: