What is a proof of principle vs proof of concept?

Answer 1

A proof of principle is a demonstration that a certain concept or theory is feasible and can be implemented, often focusing on the underlying principles behind an idea. In contrast, a proof of concept is a more practical validation that verifies a specific application or implementation works as intended within a defined context. While both serve to assess viability, the proof of principle is more theoretical, whereas the proof of concept is typically more practical and application-focused.