Re: The ultimate paradox question
Assuming that the child really is the Davros - rather than Davros turning out to be a very common name on Skaro and this all beng a misunderstanding with Davros having remembered something else entirely - then can the Doctor actually produce a Paradox ?
Will Davros either have escaped on his own or always have been helped to escape by the Doctor ?
From previous episodes we know that bad things happen when a paradox as simple as saving Rose's father occurs and killing Davros would be a major paradox. The Timelords at their height would be able to deal with such a paradox (and possibly the Daleks at their height - though they would have trouble supporting a paradox which resulted in Davros' death and their own nonexistence). The only thing comparable was the Master's Toclafane paradox but to maintain that he had to convert the Tardis into a paradox machine.