This is when a circular reasoning is used to prove another, and in turn the second is used to test the first, creating a vicious circle. - Alexander Shenkar Then, can you explain to me how you solve the problem of circular reasoning as presented in the "Understanding Prabhupada" document? Here is the problem: How do you know who an authorized guru is taught in ISKCON, the standard answer between the guru sastra, a neophyt cannot acquire a precise interpretation of sastra by reading the text directly. A neophyt is to accept the authority of a guru who has already acquired the ability to accurately interpret the sastras. Here is the trap: How do you know who an authorized guru is?