Extrapolating other people’s Ethics may or may not help you satisfy your own extrapolated goals, so I think that may be the only metric by which you can judge whether or not you ‘should’ do it. No?
Then there might be superrational considerations, whereby if you helped people sufficiently like you to extrapolate their goals, they would (sensu Gary Drescher, Good and Real) help you to extrapolate yours.
Extrapolating other people’s Ethics may or may not help you satisfy your own extrapolated goals, so I think that may be the only metric by which you can judge whether or not you ‘should’ do it. No?
Then there might be superrational considerations, whereby if you helped people sufficiently like you to extrapolate their goals, they would (sensu Gary Drescher, Good and Real) help you to extrapolate yours.