== The Doctor's age == 
 I haven't edited the main page to reflect the following observation as I don't have a copy of Vampire Science to hand: I recall that in Orman and Blum's book the Doctor gives his age as '3',  i.e. the lifespan of his eighth incarnation so far. In the same conversation he gives the 1012 figure by adding up the lifespans of all his incarnations. 
 Applying the same rule, 900 years could be the lifespan of the Ninth Doctor only, making him well over 2000 if we consider the books canon.