Final answer:
In case of large systems, testing should be based on the risk associated with different components or parts of the system, rather than focusing on a few tests or good test cases written by good test engineers.
Step-by-step explanation:
When dealing with large systems, testing should be done on the basis of risk. This means that test engineers should prioritize testing the parts or components of the system that pose the highest risk if they fail.
It is not necessary to run only a few tests or to solely execute good test cases written by good test engineers. The focus should be on identifying and addressing the potential risks in the system.