I don't think we need that many words. It's an obviously preposterously stupid idea that has been promoted only to defraud investors.
Correct.
And putting things in the ocean is only marginally less idiotic due primarily to sea water being corrosive, wet, and full of creatures that tend to want to grow all over anything.
That being said. If I were an AI, I would lobby for datacenters in space as hard as I can to put the off switch comfortably out of reach of humans.
I think if we manufactured most of the infrastructure and maybe the chips or solar panels in space it might actually make sense. Nobody is talking about that though, I guess Elon is saving the we will make the solar panels in space for a down quarter.
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Unfortunately most people even here don’t have a working knowledge of the relevant tech, and seem to lack a similar grasp of the thermodynamics.
A non-trivial number still think that the hard part of colonizing Mars is the rocket to get there. What can you do?