Chances are, if you’ve ever had a conversation in Japanese – or even any other language – with a native Japanese person, you might have been slightly disconcerted by their constant interjections.
That’s because nodding along, saying things like “I see” (naruhodo), “Oh really?” (sou desu ka?) and just plain grunting is considered a polite way to indicate to a speaker that you’re following along in a conversation.
This technique is called “aizuchi” in Japanese and, sure, it seems common sense in any culture to occasionally give a nod of the head or look up from your riveting game of Candy Crush Saga to indicate you have at least a passing interest in what’s being said, but the Japanese really turn it into an art form.