1. A test oracle is a hypothetical person or machine that can tell when actual test results are the same as expected results. Explain the need for including a test oracle in developing testing theory.
2. . Give an example of a system for which user training and operator training are the same.
Prototyping allows the users to try out a working model of a system before the actual system is complete.
Explain how prototyping can be counterproductive if it creates task interference during training.