Chapter 48 asserts that 'wise men do not call them Sadgurus.' What types of individuals are being referred to, and what is the core deficiency identified in the text?

In Chapter 48 of the Sai Satcharitra, the text explicitly lists several types of individuals that wise men would not consider Sadgurus. This includes those whose expertise is limited to the study of Vedas or Shastras, those who only explain Vedanta, and those who practice Pranayama or wear heated marks (Taptamudra). The core deficiency identified for these individuals is a "total lack of self-experience." The chapter argues that their knowledge, however vast or sweetly explained, is merely "verbally hollow." A person who does not have direct experience themselves has nothing of true spiritual substance to give a disciple and therefore should never be called a Sadguru.