I'm not sure what you're passing on here? I agree that Turnoi has qualifications in specific fields. My point is that does not give him expertise in or experience of all branches of ESL teaching.

Yes but who do you agree with Beth and why? All I can say is that Turnoi finds himself in exactly the same position as many of us posting on this site. The position is is that we can all claim whatever we choose without providing any evidence for such claims. This agreeing about qualifications in specific fields, seems to me to be handing out wriggle-out-space. The alarming flaw in knowledge concerning pinyin numbers just doesn't give me any confidence that Chinese Mandarin would be one of the concessionary 'fields of expertise.'