It's a bad analogy twice over. There's huge amounts of aquifer water under the it, just not much on the surface. If your removed surface bodies of water from Ea

It's a bad analogy twice over. There's huge amounts of aquifer water under the it, just not much on the surface. If your removed surface bodies of water from Earth and needed to place an outpost somewhere where you could still get water, you could do a lot worse than the Sahara.