Well, science and engineering are kind of inseparable at this point, so you'll get that no matter what. Remember though that NASA's engineering feats are driven by scientific curiosity, so if you want people on Mars you're going to have to let them do their research.
I guess you could say, you gotta let Jimbo do his math homework before he can pass the class
Probably? But NASA is itself evidence that careful government spending can produce comparable tech booms to a war that killed off 3% of the world population. Something to consider I guess.
The only reason NASA has been so successful, let alone that it even exists, is
because of the cold war. It only took just under 11 years after it was founded, in the dead heat of competition with the Soviets, for NASA to land us on the moon. The communists were so embarrassed by what we had acheived they tucked tail and never went to the moon.
The spirit of competition is the cornerstone engine of civilization's progression.