Considéré à tort comme goofs: Justin is charged $3.20 to mail a Business Reply envelope which is clearly marked "Postage Will Be Paid By Addressee". However, it is possible he intends to send it Priority Mail, which would have cost $3.20 in the time period of the original novel.
Equipe ou équipement visible: A microphone can be seen when Justin is bringing his prize back home.
Erreurs faites par les personnages (éventuellement des erreurs délibérées par les cinéastes): It is stated that Ritalin and cocaine have only three molecules different. Both are actually single molecules. Although similar in shape, there are several atoms difference.