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Section
Appendix
6.8

Social Welfare Functions

Social welfare functions are mathematical functions that tell us how to aggregate information about individual welfare into one society-wide measure. These could support decision making by beneficial AI systems.

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Review Questions

What are social welfare functions and what core challenge do they aim to solve?

Answer:

Social welfare functions aggregate individual wellbeing into overall societal wellbeing. They address how to compare and weight diverse individual interests.

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Explain the difference between utilitarian and prioritarian social welfare functions.

Answer:

Utilitarian functions sum individual wellbeing directly while prioritarian functions give extra weight to the wellbeing of worse-off individuals.

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What are some of the limitations of using cost-benefit analysis to approximate social welfare?

Answer:

Cost-benefit analysis relies on financial proxies for wellbeing and neglects distributional impacts.

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