An expert system is an artificial intelligence program designed to emulate the decision-making and problem-solving abilities of a human expert within a specific domain [1]. It typically consists of a knowledge base, which stores structured facts and domain-specific rules, and an inference engine, which applies logical rules and heuristics to the stored information to deduce answers or recommend actions [1]. Developed extensively during the early evolution of artificial intelligence, expert systems rely on explicit knowledge engineering rather than purely statistical learning, allowing them to provide structured, rule-based reasoning for specialized tasks such as medical diagnosis, financial analysis, planning, and engineering design [1].