Passive consumption - reading, highlighting, re-watching - creates an illusion of learning. Studies consistently show that retrieval practice, the act of actively recalling information from memory, produces significantly stronger and more durable learning than passive review alone.

TrainRun applies this principle to video and text content. Instead of passively watching a lecture, you physically engage with the vocabulary and concepts as they appear. Collecting a word at the right moment forces a micro-retrieval - a brief act of recognition and recall that strengthens the memory trace.

Combined with the natural spaced repetition that comes from replaying levels and encountering concepts across different content, TrainRun turns any media into a structured learning session without the tedium of traditional flashcards.