That does not compute.
That does not compute.
Yes, it does.
The fundamental idea that you're not grasping is that we do not live in a four dimensional vector space in which (x, y, z, t) are independent variables. There is an additional requirement, which outlaws an entire region of spacetime, which is that the quantity:
(ct)2 -x2 -y2 -z2 ≥ 0.
Equality in this equation holds only for massless particles, which travel the shortest distance paths.
The geometry of our universe requires that this quantity is the same for all observers in every inertial frame. Events lying outside of a hyperspatial spacetime "light cone" [for which (ct)2 -x2 -y2 -z2 < 0] cannot be causally related. This includes quantum events connected by so-called "entanglement."
For all observers, events originating outside of this light cone would appear to come from the future, a phenomenon which has never been observed.
A good explanation, with pictures, can be found here: http://www.phy.syr.edu/courses/modules/LIGHTCONE/lightcone.html
The wiki article is also good: http://en.wikipedia.org/wiki/Light_cone
This is why I keep telling you guys that superluminal velocity is impossible [I taught this subject in college for years.] The "light barrier" is not the same kind of barrier as the "sound barrier," the latter of which is not really a barrier at all. The "warp drive" of science fiction fame is a drive that needs to change the geometry of the entire universe: what it needs to "bend" or "warp"is the shortest distance between two points, which is (ct)2 -x2 -y2 -z2. However, in doing so, anyone using the "warp drive "would also become a time-traveler as well.
See also: http://en.wikipedia.org/wiki/No-communication_theorem.