Inventors and scientists in the past aimed to free mankind from fear of insecurity; these social gains carried forward only by planning; research and technical organization will accelerate discoveries; envisions total use at productive power--progress in science and engineering at times destructive to social institutions-social and economic isolation of the past will be replaced by conscious social purpose, otherwise civilization destroyed; balance between production and consumption, export-import policy, remedies for unemployment-many engineers and scientists believe "good old days" will come back, but this won't happen except perhaps temporarily; engineer doesn't always recognize "mathematics of life"; material production an inadequate yardstick of civilization.