There isn't a hard physical reason why prolonging lifespan would be impossible. Maybe it's philosophical wankery but I do think these questions have some meanin

There isn't a hard physical reason why prolonging lifespan would be impossible. Maybe it's philosophical wankery but I do think these questions have some meaning for us: 1. whether human mind would remain stable on such timescales, or how to alter it 2. whether elven approach to nature as described is feasible and sustainable and how (separately from eternal life considerations)