J. Randall Murphy
It seems to work until we can get a better term. Even 2109 tell us it is but isn't time travel. I however prefer to not make absolute statements about what is and isn't possible in this life. I have seen the impossible already, so what does that say about it's possibilities?
I certainly don't expect you to take my word for it.
Just assuming you're looking for the truth rather than making assumptions that are most likely untrue because they're logically incoherent.