Classical Utilitarianism and Distributive Justice

I watched this vid in the excellent video series, Moral Foundations of Politics.

Professor Shapiro seems to misunderstand or misstate (I’ll go with misstate) the concept of diminishing marginal utility when he describes the utility of beer and aspirin, as he misses the point that under the theory of diminishing marginal utility, the marginal utility will decrease to zero and continue into negative space. The scenario to get more beer to sell doesn’t make sense.

Image: Jeremy Bentham