Ultimately the criticism of hard AI that sticks is that its enthusiasts are using a faulty "brain as computer" metaphor as the basis for their theories. The brain and digital computers do NOT work the same (the brain is not digital) and assuming they are, and that therefore clever-enough computer models can replicate the brain, seems to put very intelligent / brilliant CS people at risk of banging their head against a wall for decades.
More generally its fun to imagine things like this but also good to realize real world limits as we live in a finite world with limitations such as living 700 years not being at all likely (or desirable, IMHO).
More generally its fun to imagine things like this but also good to realize real world limits as we live in a finite world with limitations such as living 700 years not being at all likely (or desirable, IMHO).