Why should prompts to generative Al ask for multiple and varied responses?

Generative Al typically needs a "warm up$"$ period, after which responses tend to improve

Generative Al's first responses are typically the best, and later responses decline in quality

Generative $Al$ is best used as a final arbiter rather than a source for inspiration

Generative $Al$ is a good way to generate ideas, and more and varied ideas tend to lead to the best end product