Originally Posted By: Friendly Neighborhood Ray-man
 Originally Posted By: Nöwheremän

And secondly, why the hell it took them so long to work out they only had one head is beyond me. As soon as The Doctor mentioned the two heads are better than one line, I said "Well why have all the angels got one head then? Work it out."

the Doctor mentioned a "low level perception filter."
work it out.

Pretty pathetic really.
Why give something away so early?
Once they 'revealed' it, then all the suspense was gone.