What is the significance of invoking Goddess Saraswati in the context of writing the Shri Sai Satcharitra, as mentioned in Chapter 1?

According to Chapter 1, the grace of Goddess Saraswati is indispensable for creating any literary work. The author bows to her, asking her to make his tongue her swan and ride upon it, symbolizing the desire for eloquent and divinely inspired speech. She is described as the Mother of the Universe and the Vedas, a river of knowledge and virtues. The author posits that without her mercy, writing the book would be impossible. He prays for her to make him an instrument to share the nectar of Sai's life story, highlighting her crucial role in enabling the very creation and articulation of the Satcharitra.