The facts on the ground in Perugia, is that it was the Murder weapon.  That's what the judges decided.  Wikipedia is an enclyclopedia.  It reports facts, that are decided by others.  You are not free to insert your personal opinion into an article.  If Amanda Knox's conviction is reversed on appeal, then that will the fact.  But this is not the page to argue for her innocence.  That's one of the most basic editing facts about Wikipedia.  Wikipedia is not the place for righting great wrongs.  Wikipedia is not the place for arguing the innocence of prisoners.  You can find a dozen websites on the internet where you can do that for Knox.  You can't do it at Wikipedia.