The growing popularity of learning foreign languages has brought about the biggest single change in the way we spend our effort. I agree that studying different languages is essential some extent. Advanced devices might be a perfect helper between people who use different mother languages like English and Korean. Although the devices can translate sentences perfectly, they can not replace our real talking. The conversation includes many things like mood, tempo, body languages, and gestures as well as just words. The translators can change words immediately but they can not express user's emotion. People need to learn foreign languages.