I believe there is a general misunderstanding of the purpose of asana practice - which is therapy. Advancement comes through perfecting yama and niyama, pranayama and the internal limbs - asana practice is the foundation of that process. So no, I was not curious - I had the desire to get the subjects to speak about this so as to dispel this general misconception.
Mostly the questions were not asked out of personal curiosity but with the intention of getting the interviewee to speak on a subject of interest. However, I was certainly interested to hear their different perspectives and feel that my own understanding has been enhanced through the process of making the book.
In the Guruji book, it seems that people agreed that advanced asana did not necessarily mean advanced yoga practice. Do you think that is true? Through asana, with the tristhana and a good teacher and time wouldn't that lead to advanced practice? Would a student automatically start doing self-study and such?