Why does the author argue that poetic biographies are superior to prose for Guru service?

The author presents a strong case in the preface for the superiority of poetic biographies for the purpose of Guru service. The primary reason given in Chapter 0 is that poetry is memorized quickly and easily, stays in the memory, and can be recalled when needed. In contrast, prose is described as being difficult to memorize. This ease of memorization makes poetic works most suitable for the practices of study, recitation, Parayan, and Saptah, which are central to this form of devotion. The author even suggests this is why ancient Sanskrit literature is predominantly in verse.