It has the short beats and rests which make people want to jam to, but swing can also give a feeling of tension to its listeners. It is the value of the music, not the style. The band can swing so hard that the soloist will just ride on top of the beat which will make the crowd crazy, but it can also sound so sweet that the crowd sits back in their chairs and relaxes to the slow swing. The classical musician, a legit player, uses the language of music in a different way. First, they rarely talk about their music in an informal setting.
Jazz is a music that has formed a language, No one is banned from learning the language.
In fact outsiders are encouraged to learn the language. One cannot learn this language in a classroom, or from a text book. The only resource one can find to learn the language is to be constantly surrounded by it. Just like a child who begins to talk, only through imitation will one pick up the language. However jazz is not conformed to the language, If you took the entire jazz language away, there would still be the moan of the soloing sax backed by some cats swinging slow and easy.