The goal of viability theory is to determine policies (viable policies) that always keep the system inside the viability constraint set, rather than to optimize some criterion.
"I would say that the success of Greenmarket demonstrates that a producer-only policy is viable in New York," Mr. Lewis said.
If delegation of monetary policy is viable, the optimal policy is to issue nominal debt.
Understanding the relative importance of these factors is vital to the establishment of impartial government policy and viable insurance schemes, and the identification of resources needed for emergency preparedness (Keeney 1995).
"If we give all the money back to people in lump-sum payments, it's sort of sweetener that can make the policy politically viable," he said.
They can choose to follow whatever policy deemed viable for them, even if it comes at the cost of ditching long-touted claims of humanitarianism.
Lack of physician support for increasing LOS also accounted for the inability of nursing staff to see this policy as viable in their hospitals.
An extremely high spatial disparity in food retail concentration is observed across governorates and districts, suggesting a need for flexible policies for viable food system development in various contexts.
Many countries, including El Salvador, are adapting their risk reduction strategies around a plan of prevention; however, when disasters do occur, especially in developing countries, governmental and non-governmental relief and development institutions continue to consider relocation policies as viable, go-to strategies to remove people from geographically hazardous areas.
The basic disagreement over which policies are viable and which ones will do the most to help the nation's most-coveted voting bloc also telegraph what is likely to be a contentious two years, with the GOP willing to embrace almost none of Obama's proposals.
