I havent read the whole thread, but regarding the "time-traveller" in the charlie chaplin movie, a popular theory is that what she is holding is a 19th century hearing aid.
http://www.livescience.com/8868-time-traveler-hard-hearing.html
I think we can travel forward in time (by moving at or faster than the speed of light) but we are unable to travel back in time. Steven Hawking is a big time travel fan, but he has said many time that travel to the past is not possible
http://www.livescience.com/8868-time-traveler-hard-hearing.html
I think we can travel forward in time (by moving at or faster than the speed of light) but we are unable to travel back in time. Steven Hawking is a big time travel fan, but he has said many time that travel to the past is not possible






