From Roderick Stackelberg’s Hitler’s Germany: Origins, Interpretations, Legacies;
All interpretations are bound to generate some controversy as they provide a particular perspective that not everyone may share. That perspective is determined by the historian’s values, particularly political values, which are usually, but not always, the values of the society or subgroup he or she lives in or identifies with. If the disagreement is about facts, it can usually be readily resolved. But more often the disagreements between historians involve the meaning and importance of those facts. The same facts may be evaluated quite differently by different historians. That is why there are still many historical issues on which serious historians disagree, even though the basic facts are known and accepted on all sides and the contending historians are genuinely committed to sound scholarly practices and the objective evaluation of the evidence.