The author outlines a hierarchy of literary service. Can you analyze this hierarchy and explain why writing about one's Sadguru is considered the ultimate path to salvation?

The author presents a clear hierarchy of service through writing. At the lowest level, as explained in Chapter 0, is writing biographies of worldly figures, which is a worldly service with temporary, non-spiritual fruits. A higher level is writing the biographies of many saints; this is a form of Guru service and yields spiritual fruit but is still considered partial and insufficient for attaining the ultimate spiritual goal. The supreme form of service, granting the fruit of salvation, is to write the biography of one's own Sadguru. This is considered the ultimate path because it is a focused, devotional act done either by command or inspiration, and it is integrated into a continuous spiritual practice through personal study, Parayans, and Saptahs, making it a complete and unwavering discipline of body and speech.