Context is everything
A note that says 'mitochondria is the powerhouse of the cell' is trivia. The same fact, connected to the lecture on cellular respiration, linked to the textbook chapter, with your own annotation about why ATP production matters for the exam — that's knowledge.
Context transforms isolated facts into a web of meaning. When you review a flashcard and can trace it back to the original voice recording, the PDF it came from, or the YouTube timestamp where it was discussed, you're not just reviewing a fact. You're reactivating an entire learning experience.
This is why Repeatica preserves the relationship between source material and generated content. Flashcards link back to notes. Notes link back to recordings and attachments. Nothing exists in isolation because knowledge doesn't work that way.