Historians have been divided as to whether Heisenberg and his team were sincerely trying to construct a nuclear weapon, or whether their failure reflected a desire not to succeed because they did not want the Nazi regime to have such a weapon.
Para sejarahwan berbeda pendapat tentang apakah Heisenberg dan timnya benar-benar berusaha membangun senjata nuklir, atau apakah kegagalan mereka mencerminkan keinginan untuk tidak berhasil karena mereka tidak ingin rezim Nazi mempunyai senjata seperti itu.