If you compute the implications of a utility function and they do not actually agree with observed preferences, then that is an argument that the utility function you started with was wrong. In this case, you seem to have an argument that our utility function should not have time discounting that’s stronger than polynomial.
If you compute the implications of a utility function and they do not actually agree with observed preferences, then that is an argument that the utility function you started with was wrong. In this case, you seem to have an argument that our utility function should not have time discounting that’s stronger than polynomial.