I serve on the editorial boards of several. Don't really want this to go flam-ish, but the point is, dictionaries are built on the kind of things Fretless, Adam and Malcolm are talking about. You've got to go back behind the conclusions sometimes and look at the reasoning that leads to them. For two reasons: 1) they might be wrong 2) things change. Both reasons lead to new editions. Besides, you learn all kinds of things just in the arguing. I never yet learned a thing from doing what I felt like doing in the first place.