While I agree with some of what you are saying, Eduard, I believe  that you 
have opened a discussion thread that will be quite interesting to  follow!
 

You wrote: "The idea that the "native speaker knows more grammar than has  
ever 
been printed in any grammar books" is PURE NONSENSE"
 
And here's a response based on recent discussions:  Informed by  his/her own 
grammar, a student can write a sentence such as "Running from the  neck to the 
cheek is a patch of white hair" and the grammar experts can debate  about the 
grammatical structure of this sentence for days!  In this  case, the 
student's grammar informs the structure that the grammarians cannot  agree on.  Who 
knows more grammar? 
 
I think that is what the statement actually means. I don't think it  has 
anything to do with Chomsky's LAD or wiring or anything.  
 
Looking forward to other responses--
Linda

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