> classic human-centered thinking to suppose that aliens would be regularly appearing a few thousand feet or so from us, but never ever anywhere in the rest of

> classic human-centered thinking to suppose that aliens would be regularly appearing a few thousand feet or so from us, but never ever anywhere in the rest of the billions of miles of our solar system One, rich humans sometimes like to go see exotic wildlife, why wouldn't aliens? Two, how would we know if there were aliens looking around other places? > and never clearly interacting with our physical world in any way "Take nothing but pictures, leave nothing but footprints."