Time travel is not ever going to happen folks. I am sorry to be the bearer of bad news.
This is simple, really. If time travel was to ever have been invented, would we not know about it by now? Thousands of years of humanity, and absolutely no evidence of a time traveler? If you could travel time, would you not go back to visit the dinosaurs? And are you telling me that if people were traveling time (eventually, inevitably, there would be millions of time travelers), that some would not die by natural causes, or killed by a dinosaur, leaving fossil evidence of a human being walking with dinosaurs…?