1. Methods of evaluating the needs of end users can occur throughout the development period, as in the case of participatory design, or a model such as contextual design can occur at the beginning, during the requirements a0 phase of the software development life cycle.

2. A software designer delivers software that displays simplified Chinese characters to a client in Taiwan, a nation that uses only traditional characters. This makes the interactive material distracting and difficult for Taiwanese users to read. Rather than a failure in program logic, this would be considered a flaw in the execution of the user a0.

3. A designer is developing a user interface for a new simulation video game whose intended purchasers are dedicated gamers, and who would be glad to provide input. Because demanding users with preferences and deep knowledge of the required tasks will employ the interface, the designer is likely to use the a0 design model for implementing user-centered design.

4. After the beta version has been tested, a product will go through final a0, followed by general release.