Great comments Nick! One nit though:
> 4. Preferences of future and past people count for as much as current
> preferences of existing people.
Actually, the paper allows for any weighting across past vs future selves,and
shows that almost all such weightings imply a longer social horizon
than private horizon.
> A. Yet another consequence is that if you want the social planner to give
> you what you want, you may create lots of individuals who have as their
> main preference in life that your preferences be satisfied.
Once you get into creating new creatures, things get very complicated
indeed,even ignoring issues of time preference.
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