Well, yes, he left without the crew, but he could still acquire a crew. As I said somewhere above, I think the Doctor actually prefers to be alone, and hates it at the same time; but it's also quite possible that the TARDIS should have a full compliment of Time Lords to run it - oversized brains and psychic links or whatever - so substitutes won't do. Except in this episode where they could do what they did, with coaching.
no subject
Date: 2008-07-06 02:02 pm (UTC)I love, totally love, seeing Jack on the TARDIS.