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In my question here, I asked about the political system on Earth during the time of the Avatar movie.

A comment by Klaus states

In The Way of Water, it is briefly mentioned that the Earth is becoming unlivable, and Pandora is being prepared to be the new home of mankind.

Given the size of the interstellar ships used in the movies, how is it even remotely feasible to transport Earth's population to Pandora? Or is the plan simply to abandon 99% of humans in the process?

In How was the base on Pandora built in Avatar?, it states that there are maybe 10 or 12 ships that take about 10 years to complete the journey (so double that for a return trip), and that while we see ships with a 350 ton payload, there may be ships with a 1000 ton payload. None of this bodes well even for our current 7.8 billion population.

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  • Build more ships
    – Valorum
    Jun 19, 2023 at 18:31
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    @Valorum Yeah, let's just knock out 10,000+ ships on a planet that is dying.
    – Peter M
    Jun 19, 2023 at 18:35
  • I have yet to come across a work with anything like a realistic setting that describes a way to migrate a major fraction of Earth's population off Earth. Orbital energy just for LEO is about 9kWh/kg, so assuming around 200kg per person (including a few kg of personal effects and 100kg of oxygen, water and food, counting on external recycling and assuming their accommodation is constructed in space), just the energy cost of moving half Earth's population to orbit would be OOM 10 petaWatt hours, or about 50 years of the world's total energy production as of 2022.
    – DavidW
    Jun 19, 2023 at 18:35
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    @PeterM - I'm guessing all the poor people people will be staying behind
    – Valorum
    Jun 19, 2023 at 18:51
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    @Hypnosifl I'm not talking about that. I'm talking about the plain energy cost of lifting billions of people off the surface of Earth. (Which would actually be at least an order of magnitude higher, considering most people won't survive infinite acceleration, and limiting acceleration to 3g or so multiplies gravity losses by a factor of around 9, plus most people would want to be in some kind of hard enclosure to maintain a livable environment, limit radiation etc.) You start running into thermodynamic issues cooling Earth to livable temperatures, assuming the energy is available.
    – DavidW
    Jun 19, 2023 at 18:56

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Maybe thier consciousness will be transferred but not the bodies. Maybe put in Navi bodies too so they don't have to terraform

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    Might be worth adding that we know humans have the tech to do this since in Way of Water we saw that Quaritch's brain state had been saved before the death of his human body, and they were able to transfer it to an avatar body.
    – Hypnosifl
    Jun 21, 2023 at 16:51

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