Nazi ' s were really a disgrace to science . When Eugenics was disproven they refused to listen . They selectively informed themselves , which is the antithesis of good science . But you do have a point . We shouldn ' t blindly trust . Sadly , climate change is very undeniable at this point . <| sep |> I don ' t believe one of the 4 rulers of grand line his afraid of someone that got beat up by her army and is chained in her magical prison book . It ' s as simple as she got better things to do then climb in transportation to get to another islandpart of the island just to meet a new prisoner . She keeps luffy alive in prison at least because she wants to control Sanji for her alliance . Maybe she also wants to break his resolve more then to simply kill him .