Mathematics Goes to the Movies

by Burkard Polster and Marty Ross

Monty Python and the Holy Grail (1975)

17:03
- Crowd: A witch! A witch! A witch! We found a witch! We've got a witch! A witch! A witch! We have found a witch. May we burn her?
- How do you know she is a witch
- She looks like one.
- Bring her forward.
- I'm not a witch! I'm not a witch !
- But you are dressed as one.
- They dressed me like this. - No, we didn't.
- And this isn't my nose. It's a false one.
- Well? - We did do the nose.
- The nose? - And the hat. But she is a witch !
- Did you dress her up like this? - No, no!
- Yes. A bit.
- She has got a wart.
- What makes you think she's a witch?
- She turned me into a newt!
- A newt?
- I got better.
- Burn her anyway!
- Quiet! Quiet!
- There are ways of telling whether she is a witch.
- Are there? What are they? Tell us. - Do they hurt?
- Tell me, what do you do with witches?
- Burn them!
- And what do you burn, apart from witches?
- More witches! - Wood!
- So why do witches burn?
- 'Cause they're made of wood? - Good!
- How do we tell if she is made of wood? - Build a bridge out of her.
- But can you not also make bridges out of stone?
- Oh, yeah.
- Does wood sink in water?
- No, it floats. - Throw her into the pond!
- What also floats in water?
- Very small rocks. - Cider! Great gravy.
- Cherries. Mud. - Churches.
- Exactly.
- So, logically--
- If she weighs the same as a duck...