[ClearCase_guy]

Fritz Reiche, who left Germany in March 1941 for a job at the New York New School for Social Research, carried a message from Fritz Houtermans that even a morally perplexed Heisenberg would be forced into a relentless commitment to build the bomb.

"Herr Doktor Heisenberg -- der Fuhrer insists that your uncertainty on this matter must end."

[Retain Mike]

I remember from another source Heisenberg and other nuclear physicists had a meeting with Speer about the bomb in 1943 and they decided not to pursue the idea. I think one key was the unresolved issue of slow or fast neutrons. Speer considered that with the war on more immediate return could be expected from other uses of people and resources.

There was also the fact experimental physicists did not particularly like theoretical physicists, because their theories could seldom be proven, but they got prizes like Heisenberg Nobel in 1932. Also, they considered the work “Jew science”.