Why are the brief biographies by Shri Dasganu Maharaj considered ideal for a detailed Saptah of a single saint?

This question is based on an incorrect premise. According to the source material in Chapter 0, the biographies by Shri Dasganu Maharaj are actually not ideal for a Parayan or Saptah focused on a single saint. The text explicitly states that while one can perform a devotional reading of his works, the individual biographies within them are not comprehensive or detailed enough for this specific purpose, often spanning only two or three pages. Chapter 0 suggests that for a focused Saptah on one saint, a more detailed, dedicated poetic Guru biography is required, not the brief summaries found in these larger collections.