If that’s the only issue, we could choose whatever policy helps the most and then compensate current folks by borrowing. Economic growth will be lower and future folks will be poorer, but the policy will be efficient.
As an aside, we don’t really know how wealthy future folks will be. If a Singularity is imminent, it’s probably efficient to liquidate a lot of capital and help current folks more.
If that’s the only issue, we could choose whatever policy helps the most and then compensate current folks by borrowing. Economic growth will be lower and future folks will be poorer, but the policy will be efficient.
As an aside, we don’t really know how wealthy future folks will be. If a Singularity is imminent, it’s probably efficient to liquidate a lot of capital and help current folks more.