How/why is this not sci-fi? Does it have to call out by name deterministic timeline, Einstein-Rosen bridges and dangle the fact that even if multiverse theory is true, one cannot escape or notice the escape from theirs? It's about consequences of time travel through alchemy so advanced it is indistinguishable from magic. Also, mk - this post managed to make a shout-out to an inactive account (e.g. francopoli), which I thought wasn't possible. Bugski?Spacewing commander has undoubtedly already grasped this, but it was only then that I understood: whatever happened on the right side of the device was complemented, a few seconds later, by an event on the left side. "Is this nanomachines, professor?" I asked.
"No, sir, I have never met a sentient nanoconstructor, and if I did, I would not trust it to do my programming. This is a form of spacetime science."