Cleese spoke about portraying abilities outside his own experience in the scene in which Klaatu corrects a complex mathematical formula Barnhardt has written on a blackboard: "The trouble is, I had to be able to write the equation, because Barnhardt has been working on it for 60 years.
Cleese je govorio o prikazivanju sposobnosti izvan vlastitog iskustva u sceni u kojoj Klaatu ispravlja formulu koju je Barnhardt zapisao na ploči: "Problem je bio u tome što sam morao biti kadar napisati jednadžbu jer je Barnhardt radio na njoj 60 godina.