> On Jul 22, 2021, at 7:53 AM, Marc Wilson <marc.wilson at gmx.co.uk> wrote: > > Don't forget Swift's Struldbrugs. Eternal life is nothing without > eternal youth and health. And Swift and Niven got the idea from the Classic Greeks. Tithonus who was granted immortality but not youth and keep getting older and older. — Sig intentionally left blank.