Managing or re-inflating the economy through increased printing of money; and through manipulating interest rates, military spending, tariffs, taxes, investment credit, and rules of competition, etc, toward the end of sustained growth.
Claim
Economies cannot expand without exceeding the physical limits nature sets. Increasing affluence is a principal cause of environmental degradation. What is called for is economic retrenchment and retraction -- a small economy for a small earth.
Counter claim
At this point in time there is no economic model available that has been in use long enough to guarantee sustained growth.