What are the key principles of deterministic programming and how can they be applied to ensure predictable outcomes in software development?

Deterministic programming is based on the principle that given the same input, the program will always produce the same output. This ensures predictability in software development by eliminating randomness and ensuring consistent results. By following key principles such as avoiding side effects, using immutable data structures, and writing pure functions, developers can apply deterministic programming to create reliable and predictable software systems.