This seems to be all over the place with the stuff it tackles. As far as I see, it makes at least the following assertions: * Increasing the human lifespan pas

This seems to be all over the place with the stuff it tackles. As far as I see, it makes at least the following assertions: * Increasing the human lifespan past 130 using means anything resembling modern medicine seems pretty hard. Especially for keeping the brain going strong. * People have a fixed identity point somewhere in their lifetime, and should they deviate too far from that later in their life, they shall be considered different persons and as good as dead. * Going insane is going to be a big problem if the brain keeps going and changing state for centuries or millennia. * People would go into decision-theoretic ruts if they knew they lived forever. Apparently people also want to go into permanent retirement after a while, regardless of how healthy they are. * People living forever keep consuming resources. This is somehow worse than the current situation where people give birth to more resource-consuming people and then die. * Unlimited lifespans would cause massive social stratification. * Since we don't know exactly how minds work, they probably run on magic instead of atoms and electrons, so you can't get them in a computer. * Although human minds are perfectly fine being trapped for decades in a dark liter-sized bone shell in nature, they would quickly go insane from claustrophobia in a similar computer substrate. I'm not entirely sure how this works, it might be related to the part about computers not running on magic again.