Also completely dissipated energy would be rather hard to gather up and we would expend much more energy than gather.
Though there may be a habitable planet 20 light years out it donesn't mean life exists there in a communicatable state. They could be billions of years less or more advanced that us so I highly doubt the chances of finding groups at fairly similar levels of development to us would be any higher than infinitesimally small.
You will have to explain subspace energy since I haven't heard it anywhere save star trek.
I think they would probably be more akin to portals than to an elevator. In hindsight layer wasn't best word. I meant it to be a different point in space time as is how a wormhole works.
Also all of this is extremely trivial since it involves massive amounts of energy and money and we probably won't be around when any of this becomes remotely practical, but let's continue.
The multiverse bit was meant to be a joke. The post at 1:04 is the serious one.
On a more serious note, I remember reading that through the use of negative energy, space time can be manipulated without needing too much of said negative energy. Through that it might be possible to instead of stretching space time in a straight line for FTL travel to push space time into a tube (much like stretching a theraband and pushing with your finger in the middle) until it intercepted the layer you want to be at then using more energy to shorten the length and increase the width enough for a human to get across.
Well it is a good thing there are an infinite number of universes.
That may be possible though I think it would be easier to transport the whole body without disassembly via wormhole or something of that sort.
I think it is Heisenburg Uncertainty Principle.
They have been able to teleport atoms for quite a while now. I can't remember how long now but the book was written in the late 80s.
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