>>13744169>yeah it's pretty straightforward (im being sarcastic).If you think any of these things are going to be hard to make in the next thousand or so years then you are either banking hard on humanity imploding or too dumb to understand just how feasible these things are.
There is no theoretical physics involved, no negative mass needed. At least for these and a lot of other shit he talks about its just the basic conclusions of a technologically growing society.