Really? It cannot have any bearing on humanity at all? that's a rule of the universe or something? science says otherwise. peer reviewed science in the fields of cosmology. electronics engineering, astronomy, physics,... say otherwise. your computer likely has components in it derived from some of those far out theories that can "have no practical application to benefit humanity."
I don't recall anyone having to be squeezed into a space time metric with massive surface area but almost zero volume at an energy expenditure so exorbitant that it would turn the area of space time the would be Intel Pentium Technician was occupying into a mushroom cloud big enough to obliterate all the terrestrial planets in order to build your Pentium processor... It's a little different...
We do not know that that requirement will not be bypassed or overcame by some advance similar to how Van DEn Broek's improvement over Alcubierre's work. We do not know that some energy slight of hand cannot produce even that amout of energy yet not have the destructive consequences conventionally accepted. it the same way we think we can do fusion in a glass of deuterium acetone in a popped bubble; the power of the stars is unleashed.
More machinery that isn't even at the vapourware stage yet...
Don't be too sure my friend. some of this is within the reach of basement "scientists." How hard is it to get a couple of plates and precision measuring devices to work with casimir force? that is a fundamental building block for the later steps toward fiddling around with dimensional silly putty.
I wonder what effect this would have on a man... An interesting line of thought I read about in Sci Fi was of a man who unwittingly is caught in a Spacetime Mobius strip, and when he manages to get back to normal reality, notices his wife looked like her mirror image used to... He notices that the whole World is in fact back to front, and everyone else thinks that he is! When he eventually gets hungry and eats, he is killed, because the proteins in the food all have left hand parity, while the proteins in his body now have right hand parity. The food he eats is toxic to him and destroys him... Nobody can figure out why!
I wonder if being caught up in unusual spacetime topology might have more drastic effects that are more imediately apparent?