How is it that you have locked me out of editing?
My definition of the words 'preface' is not counter productive. It is, in fact, correct. Your points regarding the stylistics of the entry are also correct. Thus I suggest a compromise definition was follows...
an authorial statement regarding the purpose, goals, aims, scope of, or experience in the actual writing of, the work as a whole.
I do not believe that you have a valid right to lock-out a correct definition...I believe that you are simply being territorial and asserting your superior wiki-powers.
It would have been more professional to open-up a discussion with me. It would have been more productive to accept the more accurate definition and place it into 'correct' stylistics...rather than simply undoing good work and locking-out superior definitive knowledge.