The Allied forces of World War II were more than ready to accept a Nazi surrender, but when they realized they might have left a potential loophole for Germany to continue fighting the Soviet Union, however, they had no qualms about forcing their vanquished foe to sign another, more complete surrender.
Jet engine pioneer Sir Frank Whittle was initially blocked from developing the jet engine by the RAF who did not believe aircraft would be capable of flying in excess of 500mph.