Evacuate Earth? (was Lofstrom loop enables tall buildings?)

--- In spacesettlers@yahoogroups.com, "William" wrote:
> This energy is going to come from?

Fuel. Planet Earth has lots of it.

> A far better idea would be a giant orbiting ring structure encircling the Earth at GEO orbit, like in Arthur C. Clarke's novel "3001: The Last Odyssey". No energy wasted to keep the thing up, and far more stable. But once again, we're left with something that is no longer the planet Earth, but a megastructure which once was Earth.

Then, looking around at all the bridges, dams, canals, roads, and buildings, isn't planet Earth already a megastructure which is no longer planet Earth? If it is, then what would be essentially "lost" by building further infrastructure for additional people?

> There's no point in building such a thing.

Was there any point in building the buildings that have already been built? People built tall buildings because they wanted to be close to the Ultimate Resource. Should the buildings be torn down?

> There's other parts of the solar system with resources to build

Yes. They lack a crucial resource: the Ultimate Resource.

> --without laying waste to planet Earth.

Perhaps planet Earth started out a waste, and people work to make it less of a waste. Do you want planet Earth fully depopulated of people?