This podcast episode explores the concept of spaced repetition system (SRS) as a powerful tool for learning and memorizing vocabulary. The discussion highlights how SRS strategically reviews words at specific times to prevent forgetting and consolidate vocabulary. The episode emphasizes the benefits of using SRS for language learning and test preparation, as well as the convenience of spaced repetition systems. Additionally, the use of flashcards and the RealLife English app as examples of incorporating spaced repetition into language learning are discussed.