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As nuclear and other technological achievements continue to mount, the normal life span will continue to climb. The hourly productivity of the worker will increase.

Eisenhower, Dwight D. (1959). “Public Papers of the Presidents of the United States: Dwight D. Eisenhower, 1955”, p.598, Best Books on
As nuclear and other technological achievements continue to mount, the normal life span will continue to climb. The hourly productivity of the worker will increase.