If humanity continues its life on other planets, it must do so with the resources of the planet it will go to. It does not make much sense to live on other planets by adhering to the resources of the world.
3D printers can be a solution in the future. We know which elements the elements we need come to fruition. We can find suitable elements and produce on other planets.
It does not matter whether it's mars or another planets. The important thing is to be able to survive using the resources of that planet.
This is correct, although it's unlikely we will be able to do things like build a laptop computer from local materials anywhere but Earth. So there will be a stream of export goods from Earth, basically forever.
That's not true, Mars could be colonized to be better than Earth.
For example, in the 1600s, could you go to the store and purchase items? Well that depends where you are, if you are in north America the answer is probably no, but if you are in England the answer is yes.
In 100 years technology advanced so quickly , 1900-2000. I do not think that it is a far cry to say that Mars will be colonized by 2100.
It only makes sense that if there are say 50million people living on Mars that their would be industries to make it a self supporting planet.
