This is perfect. Thanks a lot!

Oh, i understand the point of being away. About the material, is it a metal or what? I've never changed one so I don't really know how is it from the inside

In which specific situation would you say "those people were stupid"? In at, at least, a topic related with this one?
I hate to be a boomer but a thoundsand years ago people were not working together. In fact, a couple of thoundsand ago neither did they. Why would they do so in a thousand years in the future?
I get you are optimistic. But it is very hard to get into an agreement even with your neighbours. Take a look at what it took to the government to make us all "united": force, civil wars.... and even so we are not that close. It would be quite difficult to go on a all hands in together without at least a strong "empire" that forces us all to do so.

Yeah, we should be using magical floating devices instead

For sure. Not to mention it is a show-off towards other countries in a “don’t mess with me”

I think that, if they somehow managed to travel those endless distances and see us do things, for sure they’ll understand and did something similar at the time

Well if they are so superior and intelligent they will figure out that resources are limited and one does not simply has the money and time to launch a space mission every time that a nuclear bomb wants to be tested :P