System P

System P is a framework used in logic and artificial intelligence to handle uncertain or incomplete information. It provides a set of rules for making consistent, plausible inferences based on known facts and typical patterns. Think of it as a way to reason about what is likely true when you don't have all the details, using default assumptions that generally hold true. System P ensures that conclusions are drawn carefully, maintaining logical consistency, and helps in designing systems that can make sense of real-world, imperfect information efficiently.