Character mistake: Lucy says the source of the quote "To err is human" as Alexander Pope's "An Essay on Man." The quote actually originates from Pope's earlier work, "An Essay on Criticism."
Character mistake: The Daily Mirror, at the beginning of the movie, reports the fatal accident of the soccerplayer with the spelling "fatale".
Character mistake: When Bob Munro (Robin Williams) is behind the tractor, the speedometer shows that it is below 10mph. He then states that they are going twelve. How could he if they didn't reach 10mph yet?
Character mistake: At the end of the movie, Darryl tells Calvin they don't have a back door. There's a back door in the kitchen and another door that goes back to the backyard patio.