South Asian Hindus developed the idea that this world is actually a dream and the "real" reality is somewhere else. The Vedas, the oldest Hindu scriptures (3,000-4,000 years old) suggest that people are reincarnated back into this world, which is a dream, and it's only after breaking the cycle of reincarnation or "waking up" from this dream world, that they'll understand the truth and become complete.
