How does the author of the Satcharitra justify writing a new book about Sai Baba when other works already existed?

The author acknowledges that other works about Sai Baba already existed, such as Das Ganu's Bhakta-Lilamrut and Santa-Kathamrut, Raghunath-Savitri's Bhajanmala, and publications like Sai Prabha. Chapter 2 explains that this question might arise in the reader's mind. The author resolves this by comparing Sai's life to a vast, infinite ocean, a mine of jewels that is impossible to describe completely. He sees his effort as a Titwi bird trying to empty the ocean, acknowledging the impossibility but finding satisfaction in telling what he can. He believes that Sai's unique stories are infinite and that sharing them will bring peace and enthusiasm to devotees.