Time to get your recap on. Imagine you're trying to cram an entire semester's worth of notes into a single study session, and you're stuck on the same concept, but these emojis - a book 📚, a notebook 📝, a rewind button 🔙, and a recycle sign 🔄 - are like a nod to the fact that it's all just a big loop, recapitulates the same ideas over and over. Perfect for when you're about to re-explain a concept to someone who just didn't get it the first time.