"You can't remember the plot of the Dr Who movie because it didn't have one, just a lot of plot holes strung together. It did have a lot of flashing lights, though"

This quote by Terry Pratchett is a funny method of saying that the Dr Who film was not well-written. It suggests that the movie had lots of plot holes and did not have a cohesive plot. The quote likewise recommends that the movie was visually promoting, as it had a great deal of flashing lights. This might be translated as a criticism of the motion picture, as it implies that the filmmakers were more focused on producing a visually enticing motion picture than a well-written one. It also suggests that the movie was more of a spectacle than a story. Overall, this quote is a funny way of saying that the Dr Who motion picture was not well-written and was more focused on visuals than storytelling.