Can you elaborate on the concept of 'self-experience' as presented in Chapter 48 and why it is considered a crucial quality for a Sadguru?

In Chapter 48, the concept of 'self-experience' is presented as the paramount quality of a Sadguru, setting them apart from those with only theoretical knowledge. The text explains that while verbal knowledge can be sweet and seem correct, it is 'verbally hollow' without being backed by direct, personal realization. Chapter 48 posits that the 'taste of experience is pure, and only an experienced person can manifest it.' Therefore, a guru who has not attained this direct experience has nothing of substance to give a disciple. The authority to enlighten others comes from being a giver of this direct, full experience, which is why someone lacking it should never be considered a Sadguru.