Source: David Friedman’s Substack
by David Friedman
“Utility functions are observed in the form of choices. If negative utility is the level at which existence is worse than nonexistence, zero utility is the level below which a person, given the choice, would prefer not to exist. People have that choice; for many of us, suicide is not only possible but inexpensive: All it costs is our life. Following the principle of consumer sovereignty to its somewhat grisly conclusion, it seems natural to say that if a person, having access to means for killing himself, refrains from doing so, it must be because his utility for living is greater than for dying. Making allowance for costs such as pain, injury to others, and the price of the bullet, we have a definition of zero utility: A person’s utility is zero when he is indifferent between committing and not committing a costless suicide.” (10/05/26)
https://daviddfriedman.substack.com/p/optimum-population-average-total