time travel 101

[caprinus]

The simple truth is that going back a year in time will also move you a light-year away in space. This resolves the usual grandma-murdering paradoxes; you will never affect "the past" at your start coördinates because even travelling at light speed you won't get back home until the moment you left, but you can use your "time"-travel machine to

Comments

[sabotabby]

This is why the Doctor can't land properly.