Where are all the time travellers? Shouldn't we be tripping over time travellers or are we living through a dull period in history that is little visited? Could ufos be time travelers? Or ghosts? Are we surrounded by time travelers but we just don't see them because they are not what we expect time travellers to be like. Surely time travellers would leave physical evidence of their presence, are there any anomomalies in history that point to the presence of a time traveller? If you were a time traveler where would you visit and when? I think a lot of people would be interested in a trip on the titanic and as a time traveler you could leave before the titanic hits the iceberg. No one would notice your disappearance because the ship sinks so you would be presumed dead. Any other suggestions for historically interesting events you would visit where you could leave no trace of ever being there?