Hopefully we can figure out how to warp space or cryo-sleep people
Well I’ve heard sorta thru the grapevine that Einstein neglected something that makes the temporal discussions meaningless.
I’m not sure what or where, just that it was unintentional.
To steal an idea from sic-fi writer Kim Stanley Robinson (and others, I'm sure) we'll hollow out asteroids, some 10-30 km in length and build earth-like terrariums inside. They'll be fully self-sufficient little cities of tens of thousands of people containing housing, schools, agriculture, fabrication plants, health care facilities, recreation and even a proper English pub. Put a nuclear-powered engine on the ass end of it, give it a spin for gravity and away we go. We'll get there. It will take generations living inside these terrariums but we'll get there.