User:SOTO/Forum Archive/The Panopticon/@comment-4028641-20151011010956/@comment-871108-20151014000242

I don't think it's necessary to explain it. It's not the first time the Doctor has broken the Fourth Wall. I recall three other occasions. In one story Hartnell wishes the audience a merry Christmas. In The Invasion of Time Baker grins at the viewers. In another story Martha also smiles at the camera. There may be others. It's just a clever narrative device, done particularly well I might add. For those who need explanations perhaps the Doctor is aware he is a fictional character in an alternate universe.