...I think we can both agree with what LW said in the preface

to his _Philosophical Investigations_:

LW
> I should have liked to produce a good book.  It has not turned out
> that way, but the time is past in which I could improve it.

His later book was much more messy than his elegant first book.
But that's because the subject itself is messy.  You can't do
NLP successfully without coming to grips with the messiness.