the first time travellers will start to show up in movies, old films will be searched and certain extras will appear in the background using technology that could not of existed in the year the film was made, i pods, ray bans, digital watches. suddenly a whole new area of research opens up and people will study old films looking for these clues.
one day some one will suggest that if we look carefully at modern films we will see technology that is new to us, from travellers in our far future.
the researchers will eventually study the way this technology is used in these films and then create the technology in our time, however the central mystery of time travel will not be revealled until a certain captain mission is discovered in an old joan crawford movie. there he is in the background, sipping a coffee in a coffee house in berlin, using an i pad, he looks up from the device and waves at the camera, then he blows us a kiss just as his head bows down again.
the scene is brief and captain mission is in the background, blink and you will miss it, but researchers slow it down and magnify it digitally and there he is, waving at you.