Production proposals are also summarized and evaluated on a quantitative basis, in this case by the ratio of social benefits to social costs. (The social benefit part of the ratio is calculated by multiplying the proposed quantity of outputs from a workplace by their indicative prices, adding negative prices for any proposed pollution emissions and summing. The social costs are calculated by multiplying the quantity of requested inputs by their indicative prices and summing.) Proposals with a benefits-to-cost ratio below one will need to make adjustments in order to gain approval in the next round, either by switching to a less polluting technology, producing a more socially desirable set of outputs, or using less costly inputs.