Sunday, 31 December 2017
According to Yuval Noah Harari, Sapiens: A Brief History of Humankind (London, 2014), human agelessness and post-organic intelligences may be imminent.
In Poul Anderson's sf:
aging is ended in World Without Stars and in The Boat Of A Million Years;
post-organic intelligences coexist with human beings in the Harvest of Stars Tetralogy and supersede humanity in Genesis.
I have referred to Anderson's ageless characters, Hugh Valland and Hanno, as "immortal" although they are not immune to either accident or violence. See Two Unaging Men. Harari contributes appropriate terminology:
"A few serious scholars suggest that by 2050, some humans will become a-mortal (not immortal, because they could still die of some accident, but a-mortal, meaning that in the absence of fatal trauma their lives could be extended indefinitely.)" (p. 301)
I think that John W. Campbell said, "The first immortal man has already been born." By googling, I found similar claims. See here.
See also Hanno, Lazarus Long And John Carter.