Basics -- Introduction -- The purpose of a project analysis -- Types of analysis -- Efficiency -- Measurement of utility and welfare -- Utility -- Social welfare -- Equal welfare weights -- Benefits measured in environmental units -- Disagreement -- Willingness to pay for the social good -- The main message so far -- CBA and democratic decision-making -- Democratic decision-making -- Sufficient background information -- Indicators -- Politicians' attitudes to CBA -- Recommendations -- What to do? -- Concluding remarks.