How much more difficult is intercity travel over just getting around your neighborhood?
How much more difficult is interstate travel over intercity?
How much more difficult is international travel over national?
How much more difficult is interplanetary travel over global?
How much more difficult is interstellar travel over interplanetary?
How much more difficult is intergalactic travel over interstellar?
How much more difficult is travel between galaxy clusters over intergalactic? Between superclusters?
I've yet to see science fiction at the last scale: Supercluster Wars, with armies taking millions of generations to even meet.
Do people really understand how big the leap is from "going to the Moon" to "going to Mars"? I don't.
No comments :
Post a Comment