Aug 28, 2013 #1 P python303 New member Aug 28, 2013 0 0 0 If I traveled back in time say 1 million years, how could I leave a message to future generations to prove that I had in fact gone back in time??
If I traveled back in time say 1 million years, how could I leave a message to future generations to prove that I had in fact gone back in time??