When one comes to the knowledge that "I have seen so many different types of naked dance and naked woman. What I have got? What I have gained? What satisfaction is there? Why I am not satisfied?" that is knowledge: Revision history
Diff selection: Mark the radio buttons of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.