This illusion greatly reminds me of an old horror story by W. W. Jacobs, called Monkey’s Paw. If you haven’t read it, you’ve probably encountered the motive in numerous cartoons, movies or series where the person receives some kind of mysterious monkey paw from India, which is a talisman that grants wishes, but the wishes come with an enormous price for interfering with fate. Each time a wish has been granted, one of the fingers of the paw contract. There’s a great chance you’ve seen the reference in one of the Simpsons Treehouse of Horror specials. Anyway, can you see what’s so mysterious about the hand shown below? Hint word of the day: Fringe.
