The total absence of evidence permits the official historians to give free rein to the most diverse speculations.
Walter Laqueur acknowledges:
To the present day a written order by Hitler regarding the destruction of the European Jewish community has not been found, and, in all probability, this order was never given.
Colin Cross admits:
There does not exist then, anything like a written order signed by him for the extermination of the Jews in Europe.
Christian Zentner acknowledges:
One cannot fix the exact moment when Hitler gave the order ... without doubt never drawn up in writing ... to exterminate the Jews.
Saul Friedländer admits:
It is not known precisely when the idea of the physical extermination of the Jews imposed itself on Hitler's spirit.
Joachim Fest acknowledged:
o the present day the question of knowing when Hitler made the decision for the Final Solution of the Jewish question is in abeyance, and for the simple reason that not a single document on the subject exists.