Very different concepts. Science fiction is just that and should always be grounded in what is plausible based on what we already know. If it's not, then you're dealing with fantasy fiction.
Additionally, theories for FTL travel have existed for decades and are supported (increasingly) by what we actually do know of our physical reality. The lore of Firefall was fairly solidly grounded in science fiction to the extent that only crystite was fantastic, though certainly possible given what we know of physics, similar to the idea of dilitium crystals in Star Trek (nevermind that Star Trek seems to completely ignore general relativity).
Additionally, theories for FTL travel have existed for decades and are supported (increasingly) by what we actually do know of our physical reality. The lore of Firefall was fairly solidly grounded in science fiction to the extent that only crystite was fantastic, though certainly possible given what we know of physics, similar to the idea of dilitium crystals in Star Trek (nevermind that Star Trek seems to completely ignore general relativity).
For those who like relativity, frames of reference and enjoy headaches:
https://www.reddit.com/r/askscience/comments/37wxbe/how_does_moving_faster_than_light_violate/
Last edited: