I would be very hesitant to say what might be possible in 100 years or 1,000 years--just about anything, I suppose.
I have even seen amazing things, like the Internet come to life, but there has to be a limit, if you run one hundred yards in no time flat, then you have to be in 2 places at once. One being cannot be two. So many say that we thought the speed of sound was unobtainable, but we had both man made, and natural examples of this being done, so indeed it was not only possible, but right under our noses the whole time, if I had ever seen a natural phenomena that can exceed light speed I would consider that viable, but as nothing can move faster than light, and a lot of that has to do with the fact that photons have no mass, I do not see how something with mass can move faster than something without mass. It just does not make sense and is a different rule of physics. If there is a way around light speed, it has to be quantum. That is why I put so much faith in Communications being first contact.
I agree we might be in for some amazing inventions, and I do hope that is the case, but I cannot see the impossible being done. I can see us in a world like the Corningware ad, and not all that far off, but I do not see how we can re-write physics. Because of these amazing advances in science we understand that photons have no mass, and that is why they can travel as the do. I do not know if things like Einstein Rosen bridges are possible, they seem quite a long way from where we reside technologically today just to create one, let alone manipulate one. If others are using such, the energy signatures would be very hard to miss. One thing we all agree on is that if such is possible the energy required is beyond our current understanding.
I am all for moving forward, but I think if we use out knowledge and recognise our limits, that the process might move even faster when we do not have to go over old ideas.
For those who have not seen it, here is the Corning ad I mentioned.