I don't think you can lump stopping/reversing ageing in with other things considered "futuristic" within science, like terraforming and brain uploading etc. The reason is that we know that ageing can be solved. There are tons of non-ageing species, like some jelly fish, Hydra vulgaris, many plants, single cell life, our own gametes (sperm/egg cells) and possibly Greenland shark etc. We also know that ageing stops in all species that have sexual reproduction, but it stops very late in life with poor odds of year by year survival from that point. Paleo diet and lifestyle might stop ageing sooner in humans, at around age 75 it's indicated, vs maybe age ~105 under modern lifestyle conditions. With the advances in what's called -omics and AI drug research combined, I feel that the next stage of actual age reversal is within reach.
The same goes for things like paralysis due to spinal cord injury and blindness etc. Again there are other species that can repair those things like the Zebrafish and the Axolotl/Mexican Salamander. We (read some) know exactly how ageing works, and we also know how the Mex. Salamander can regrow any limb you chop off. It's a significant technical challenge, but one that's doable. Especially ageing is a low-hanging fruit in terms on what's achievable. Below; removed limb regrows via cell dedifferentiation in Axolotl...(If nature can do it then it's doable)
The same goes for things like paralysis due to spinal cord injury and blindness etc. Again there are other species that can repair those things like the Zebrafish and the Axolotl/Mexican Salamander. We (read some) know exactly how ageing works, and we also know how the Mex. Salamander can regrow any limb you chop off. It's a significant technical challenge, but one that's doable. Especially ageing is a low-hanging fruit in terms on what's achievable. Below; removed limb regrows via cell dedifferentiation in Axolotl...(If nature can do it then it's doable)
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