Peers can be the best teachers, because they're the ones that remember what it's like to not understand.

Source: "The 100,000-Student Classroom." TED2012. Feb. 2012. Conference Presentation. Additional Information: This quote by computer scientist Peter Norvig means that when it comes to learning, one's fellow students are very effective teachers. Your peer's experience is closer to your own because they have recently been in your own situation, meaning that they also recently had to learn the same material you are currently struggling with. A teacher, on the other hand, doesn't necessarily remember what it's like to be in a student's shoes because of the amount of time that has passed since they were a student. The quote is from Norvig's 2012 TED Talk about an innovative online classroom he helped design. Watch the full TED Talk here: Peter Norvig - The 100,000-Student Classroom