In Understanding Scientific Understanding, Henk W. de Regt explores the nature of scientific understanding, arguing that it is a central goal of science alongside explanation and prediction. He challenges the traditional view that understanding is merely a psychological byproduct of scientific theories and instead proposes that it is a legitimate and necessary epistemic aim. The book develops what de Regt calls the “Contextual Theory of Scientific Understanding,” which emphasizes the importance of intelligibility — the ease with which scientists can use a theory — in achieving understanding.