Other mistake: This episode establishes that whenever Pinker Rawls passes through solid matter, his clothes remain behind, as anything he is wearing does not share his ability. However, late in the episode when Jackie throws the pot of boiling hot soup at him, the soup is shown to completely pass through his shirt, when it should have stuck to his shirt instead.
Other mistake: Padget hands over one page of his book to his imagined character who is invisible to anyone else except him. Therefore, the page should hover in the air for an external observer. However, Scully watches his apartment on a monitor and notices nothing strange. (00:38:05)