 CONT: In the second episode, when the Vogon captain is reading his  poetry to Arthur and Ford, Fords hairstyle changes noticeably  between the first part of the scene and when it returns to them  after the Guides explanation of the worst poets in the Universe;  the result of the two parts of the scene being shot five months  apart. Of course, it could be that the poetry is so horrible that it  made Fords hair curl.