Like with any language, the meanings of certain Japanese words change over time. Take the word “otaku,” which is originally a polite way of saying “you.” It’s so polite that overusing it can make a person sound a little wishy-washy, giving the impression that he’s not really comfortable with interpersonal relationships in general. Of course, if someone isn’t spending his time interacting with other people, then what does he fill his days with? Presumably, his solitary, or at least niche, hobbies such as watching anime. And so otaku picked up a second meaning of “obsessive nerd.” That was 30 years ago though, so a recent survey sought to answer this question: What do Japanese people imagine when they hear “otaku?”