Has evolved from the earlier classic disciplines like Accuracy, Classic Style and Formation Skydiving. These disciplines became a kind of boring for a few high level skydivers. They started experimenting with anything else than BELLY FLYING.
Building formations, whether they are small or big, requires discipline, fixed positions and training. Sometimes hard work. People focussing on the lighter (fun!) side of skydiving pursued the exhilarating feeling and wanted more freedom in their play. Improvise as you go along. Not be waiting for others to do their job, enjoy the feeling of the air around your body, fly your whole body. Be free.
And, as always, at the moment something is spread around the skydiving scene people started making rules so it could be put into competitions again. Many pioneers stopped at this point but the direction was set. Nowadays freestyle, Skysurf and recently Freefly are official FAI/IPC disciplines.
Besides the competitions a whole new dimension was discovered in which we could fly and play in whatever body position and in whatever direction. Speedskydiving, flying vertical as fast as possible. Birdwing, flying as fast as possible horizontally and as slow as possible vertyically.
And as long we can pioneer in our playgarden up there we will invent new ways of flying.