So time travel is as real as God?
There are many different views and texts in regards to what a "God" is.
Like I tried to put forwards about the reasons for security "If" time travel is possible, if a nutty cult group created a "God" in the past, then time travel would be real because their fictitious god is.
Admittedly it's a "Chicken or the Egg" paradox, If the basis of religion was due to such meddling. It actually creates some interesting varients of religious mythology if you apply a remote viewing method where an observation party in the future isn't just observing but interacting with an individual in the past. Not of course physically manifesting themselves there but using holographic project etc.
All the above is just a "flight of fantasy" since it has no physical proof of existance, however the same can't be applied to "time travel" considering there are experiments that can be done to prove or disprove the possibilities.
For instance my personal favourite science-fiction (only for lack of work in the area currently) for "proving the grandfather paradox" is to define one occurance in history as being the point to aim for. For instance for years people have always argued "What crashed near Roswell?".
My hypothesis is that it would be a "Carriage" containing an "Alien looking mannequin" or two, and the word "Freedom" written in Navajo written on it's side plus a few smaller articles which are for calliberation. You have to imagine that any interaction with the past involving future technologies or information could potentially jeapordise those people that would have worked on such a project, for instance it might of even caused wars. So the hypothesis suggests for anonymity that such a sharade would have to take place to "cover it up".
The main point here however is IF this was the case and for years there has been secrecy surrounding it, that "repeating" such a project (Be a repeat, or not repeating being one of the overall goals) should actually allow declassification of material on the incident, considering it's actually part of a larger on going international project.
(The imagination can be a fun thing in small doses, although I feel obligued to comment that for those that wouldn't give this "delusion" any creditability)