Board Thread:Inclusion debates/@comment-1272640-20161223201024/@comment-1827503-20170122002326

The "all nine of me" line and comparison to a cat's nine lives are both in-universe material. The former is as direct a confirmation as we'd get on any Time Lord without them directly stating their incarnation; the latter line further indicates that the former was not referring to a previous incarnation.

And therein lies the problem. If Shalka is valid, this Doctor is unambiguously the Ninth, but the readers of this wiki as a whole would expect "Ninth Doctor" to refer solely to the Doctor played by Christopher Eccleston.