[AkibaSilver]

Something about Father's Day got me thinking. When Rose changes time, we get reapers. We get the end of the freaking universe. But when the Doctor changes time (eg: The Christmas Invasion) nothing happens. I know ther was some 'weak point' stuff about there being two of them in one point, but seriously? Two Doctors are allowed to meet together all the time in the past and nothing happened. It could be the Time Lords but what about 'The Two Doctors'. Two Doctors meet up without the Time Lords supervision and nothing bad happens. Someone trys to change the Doctor's past and nothiong bad happens other than Colin Bakes trying to eat a cat. In the new series, Eleven appears twice at a fixed point (Impossible Astronaut) and nothing happened. I know its a bit small, but it bugs me.