What determines our form in the next life, and why is being human considered so special?

The teachings in Chapter 8 explain that our future births are determined by our actions and the knowledge we accumulate. The text states, "As the knowledge earned and as the performance of deeds, so is the taking of a body." This principle is attributed to the Vedas. It is mentioned that based on their karma, some may be reborn into the animal kingdom or even regress to a stationary state like plants. Chapter 8 emphasizes that the human birth is the "best of all" species and an incredibly rare gain, achieved through great fortune and merit. Its specialty lies in the unique capacity for discrimination and self-inquiry, allowing humans to ask fundamental questions like, "Where did I come from? Who created me?", which other species cannot.