Exactly...just because they may be dead in one time period, it doesn't mean they are dead in every other time period.

The Cybermen were believed to be extinct in the far future in "Revenge of the Cybermen"(with Tom Baker)...yet here was a ship with allegedly the remaining few wandering through space. Davros has "died" a few times now... the Master has "died" several times too. It's just like comics...Wheeee!

Dana