With reference to the 'Insight Theory of Learning' propounded by Gestalt psychologists Max Wertheimer, Kurt Koffka, and Wolfgang Köhler, which of the following is the most prominent and fundamental psychological feature that distinguishes 'insightful learning' from traditional mechanical (trial and error) learning?

According to Gestalt psychology, learning by insight occurs when the learner perceives the total situation or field as a whole rather than viewing different parts of the problem separately, and suddenly finds a solution through mental restructuring. Key proponents of this theory include Wolfgang Köhler, who conducted famous experiments on a chimpanzee named Sultan.