There were some sharper German, actually Prussian scientists who came here after the war. Or as they would say after displaying a week long mathematical argument on the boards, Yah, Yah,..If ve hahd dis methud bahck in the day ov da V-2, Ve'd all be speaking German now,,...Yah?
Or as Tom Lehrer sang back in 1965...
Once the rockets go up, who cares where they come down?
"It's not my department," says Werner von Braun.
WvB wasn't the best scientist on the project; neither was Robert Oppenheimer. Where they both excelled was at recruiting people smarter than them, organizing their efforts, and selling ideas that seemed pretty out-there at the time to the politicians who provided their funding.