system
Given the following post, respond as if you're commenting on Reddit:
human
[Doctor Who] What does the Doctor see when he looks at his physic paper?
gpt
He's received messages on it before... But for the most part he sees nothing. His awareness of what the paper actually is prevents him from being fooled by it, especially when he's the one holding it. For the most part the paper works by projecting the viewers own imagination on it... If the holder conveys a sense of authority and confidence before presenting then the viewer may see a police badge or an official ordinance of some kind and the Doctor just has to play the part after that.  Since the Doctor is not only the user but has a lot of experience using the item his imagination is in check when it comes to psychic paper. It's also been shown that individuals can be trained with an immunity to it.  The psychic paper isn't all that different than the Jedi mind trick, with the major difference being the user must work with the imagination of the mark as opposed to implanting a specific idea. This question is a little like asking if a Jedi can use the mind trick on himself/herself.