I would very much like to give a long full answer to this but atm I can't rly be assed. I think there should be a MAJOR development in Medical Science and Bio Chemistry. Just take a look at all the things that we are only JUST coming to know of like genetic modification - soon they'll be things we're very familiar w/ and think almost nothing of. Gene replacement for eradication of genetic disorders like Huntingdon's and Down's Syndrome. But ofc that all depends on the perspective of the ethics of it all but it's not like it's unrealistic - like if it did happen in the near future, It wouldn't shock me as much as compared to some other things ppl have suggested (not in this thread but from other sources). Another field is the technological world that no single person in the modern day can say isn't rapidly developing faster than any other field of anything right now. Again, significantly from a medical aspect from things like prosthetic/bionic limbs to maybe even composite (minor) organs (this I actually doubt bc of all development in organ transplant). But you can roughly see how the future might be w/ regards to the things that we'll have as an oppose to the things that we won't have any more of. So I think people will look back and think, "All those people lost to genetic disorders....Wast of lives".