Turnoi is probably the brainiest person we have ever had on this board. I am afraid 'diatribe' was often his second name. But since when did diatribe necessarily become wrong or ugly- especially when you are dealing with evil Chinese schools and such like? Turnoi was honest ,trustworthy and reliable and we shall never see his like again.

Whether someone is all-knowing or not is a relative matter.
In one's own peer group, nobody would expect another person to be all-knowing.
This, however, may well be the case when pretend teachers and uneducated folks like you try to talk to well-educated people but only produce irrelevant rubbish and diatribe in what they are saying and writing.
The rubbish that the ESL market actually is proves itself in post like yours, coming from a pretend teacher....