Howling:11th Doctor and traveling alone

I'm trying to figure out how the 11th Doctor will be from traveling alone for quite some time after Angels Take Manhattan? Does he become more aggressive? JSlowes ☎  04:40, October 28, 2012 (UTC)

from past experience, the doctor does seem to become more aggressive and less like his usual self when travelling alone for extensive periods of time. however, how do we know that the doctor's next stop after manhattan 2012 isn't christmas in victorian england? Imamadmad ☎  07:57, October 28, 2012 (UTC)