Why are poetic biographies considered more suitable than prose for spiritual practices like Parayan and Saptah?

The preface explains that poetic biographies are much more suitable for study, recitation, Parayan, and Saptah primarily because poetry is easier to memorize. As stated in Chapter 0, prose is difficult to memorize, whereas poetry is learned quickly, stays in the memory, and can be recalled when needed. This is suggested as the reason ancient Sanskrit literature is predominantly in verse. This ease of memorization makes the regular study and recitation involved in Guru service more effective and accessible. The text also notes there is no established tradition of performing Parayans or Saptahs of prose biographies.