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Crispr to address cancers and genetic disorders, potentially even eliminating those disorders from germ-line cells and eradicating genetic diseases forever.

Crispr to create anti-virus and anti-bacterial and anti-fungal technologies to again, eradicate communicable disease.

Nano-machines to directly combat infections and toxins in the blood and tissues.

Nano-machines to 'excavate' plaques and blockages in the veins/arteries.

Nano-machines to provide real time constant diagnostic data from every tissues and fluid in the body.

Bio-mimetics alongside material sciences and micro/nano-machines will allow us to replace organs with synthetic ones, if not using cell research to simply grow new 'real' organs.

We're already making synthetic neurons, which implies we can advance the brain in ways we probably can't even comprehend right now. Repairing damage, backups, growing to new capabilities and connectivity to systems...

Also education... we are SO MASSIVELY missing the ability of children to learn at an incredible rate. https://www.reddit.com/r/nextfuckinglevel/comments/10lixha/a_young_baby_reading/ This baby is NOT an outlier. I honestly believe that the new connections are so rapid and numerous in a child's brain that they could be learning mathematics from even this age. Our systems are just so defunct and slow that not only are we missing the mark, children literally get BORED when learning, which at a younger age learning ANYTHING is an incredible excitement, literally their entire purpose.

There's a couple of comments about psych/neuro for people being able to 'handle' being immortal but... if someone simply decides they don't want to exist anymore they should be allowed to do as they please, in peace and dignity. Sure those fields are going to continue to exist, but the implication that it is 'wrong' to not want to live forever is just laughable.