Verification is the process of establishing the truth, accuracy, or validity of a statement, model, or system. In academic and technical contexts, it specifically refers to confirming that a theoretical model, simulation, or design conforms to its specified requirements or accurately represents reality. As a methodological approach, it investigates the fidelity and correspondence between a representation and its intended properties, specification, or empirical ground truth through rigorous comparison and testing. Its significance is paramount in validating research outcomes, ensuring the reliability of computational tools, and confirming the correctness and safety of complex systems, especially in critical domains such as nuclear science and engineering.