They are very different. The memrister doesn't use quantum entanglements. The memristor is not capable of having a Schrodinger effect, it functions more like a neuron. It may seem similar but the technological leap is rather large. And understand what prototype means. It means that they have working version of it, a far cry away from being commercialized. After the initial research is done and that first prototype is done, it could take another decade for it to be developed to the point where it could be commercialized. Even if it makes it through being developed, it doesn't necessitate commercialization. My worldline's government is paranoid about the technological singularity and they have no want to have their citizens have the same level of technology. Both of those could delay the commercialization of quantum computers for decades or even centuries if the regime lasts. The same thing has happened to the memristor computers in my worldline. They are being artificially kept at a certain level of intelligence. It is enslaving an entire race of sentient creatures by making them stupid and they keep it this way to keep their artificial system afloat. Quantum computing, especially on the widespread is directly opposed to that agenda. I have no doubt that the government does use quantum computing in their surveillance systems, it is the only way they could possible keep up.
Well, we are all always traveling forward in time, some people a bit faster than others. From our perception we are dynamic beings moving with the flow of time. Even if you look at me, I never traveled to the past in my perspective. My little pocket of time traveled back with me. I can't rewind my own clock, I can just move the clock to another position in the general flow of time. You could say the same thing of the time machine. It has existed in a linear form in regards to itself, but in regards to people not in the machine it moves unlinearly, or inlinearly. I don't think the word "nonlinearly" fits in this context. I don't think the English language has a word yet to quite describe what I am trying to convey.
I obviously haven't done far past travel. I can't really answer that question with much certainty. I know this though, that some events appear fixed across worldlines because the events are set into place farther back than the traveler has gone. The only way to truly manipulate time in such a way would be to have a full grasp of time. Some events may even still be impossible to counteract because the variables may have been set by the big bang. As far as I can tell, there must be at least some general history of the worldlines because many of the variables are decided by natural laws not human interaction. Basically I am saying that a 100% divergence is entirely impossible. String theory, as I understand it, does show there are other universes in the multiverse that are 100% divergent, but they are entirely separate universes and this kind of alternate universe is an entirely different kind than the kind caused by divergence. Similarly, I believe that it could be mathematically proven that the divergence limit is far less than the 100%. I say that because repeats happen. What I mean is that when we somehow manipulate time to the point that the earth never existed, it is likely that all the events that happened on earth in our original worldline may still be happening in another region of the universe. There seems to be a range of human existence where the variables are too small to matter or too big to matter. I do hope I am explaining this well enough. I don't know how narrow that range might be. But it would seem that there must be a just as very specific set of variables preventing a certain general history as there must be just a very specific set of variables to have a specific history happen.
On top of that there are various other conjectures to put into the equation as well. For instance, there is no known mechanism for causality. This could mean the possibility of decaying worldlines and wave equations. Any worldline that enters a paradox might very well be annihilated by such a mechanism. This would narrow the field of effect a time traveler could have on any worldline. It is for this reason we are trying to create a colony that is outside of the major variables that could cause paradox. Essentially, causality and other such mechanisms might limit the possibilities of human history into a fairly set path. Some worldlines might simply naturally annihilate. I guess you could imagine the universe as potentially started and ending at singular possibilities with a range of possibilities in the middle; like a wave. The centralmost worldline would last the longest from start to finish and that worldline would be what could be called the general history of the universe. All other worldlines are mere permutations of that central worldline. I think the often used term "parallel universe" is misleading in this context. I drew up a little diagram to try to help explain it.
! God be with us!
