So with all this time travel talk it does bring one to question the galactic speed limit: the speed of light. Why can it go no faster even when speed is added to it?
As famously depicted In the Movie Superman 1, there is a theory is that if you can travel faster than light you can travel back in time. The Man of Steel flew so fast around the world he flew faster than the passage of time and returned to a point in time before he left and thus was able to save his friends who had previously perished.
Apparently, to our understanding to this point though, If you try to send something faster than light that additional energy converts to mass instead of additional speed. Superman would have just become heavier at the Speed of Light barrier, not gone past it... Is the speed of light itself the speed of time passing and it can go no faster because there is no additional time for it to go faster in? If speed = distance over time, and there is enough distance and speed to allow that faster state the only limit I can see in that formula... is the speed time passes itself...?
If time is a fixed arbitrary amount we observe as being the speed of light at 299,792,458m/s is it possible that amount was different in the past and the speed of light was faster or slower than the 299,792,458m/s we know today? And if it was, can this help explain the expansion of the universe? If the light which sets off from distant starts started off when the speed of light was slower, it would look like those stars are further away because the light took longer to get here due to its universal constant speed being lower when it set off... which then asks the question does light keep the universal constant which is the speed of light it was forged under or does it become subject to the speed of light under the current universal constant speed which is present today, which could manifest itself in Red/Blue-Shift where the wavelength is stretched/compressed to accommodate the new conditions it is under? We have cameras today which are so fast we are able to record a passing light ray on its traversal thus making its speed recordable. Has anyone to this point looked at a billion year old light ray arriving from one of the further away stars and checked that ray is actually moving at 299,792,458m/s...? Perhaps cameras are not that good yet for light that dim... but it's only a matter of (heh) time until they are.
Or, another way to think about it, is In SC top speed is limited by the Servers. 2000m/s is the fastest speed there is, I went this fast in a death tumble in a 350R over Crusader (engines off) and it turns out 2000m/s is the Server Speed Limit as confirmed by other players who'd also reached that speed due to bugs and other oddities. If existence is a simulation, is 299,792,458m/s the Server Speed limit... and does this mean the 'Verse is currently 0.0006% replication of reality and the server speed cap can be used as a reliable measure against our ability to make an accurate simulated recreation of reality itself in the first place?
And this brings us back to our talk about time-travel: Once we have a simulation which can accurately recreate reality we need not do time travel at all - we can just fast-forward or rewind the simulation like it was a VHS tape and take a look at what really happened in history like we were really there and what will happen in the future to a reliable margin of error, at which point we can learn the simulations future knowledge and recreate its advanced technologies without fear as they would basically have been invented by the simulation, not by physical lived history itself... there can be no paradox or damage to a timeline which has not been traversed... you just need a simulation accurate enough and a computer fast enough to be able to outpace real life to look forward and simulate future discoveries yet to be made.