Why do they make errors such as these 2 obvious ones below? Home Alone - Kevin is 8 years old. Home Alone 2 - The parents tell the cops they left him home alone last Christmas and they also say he is now 10 years old. Terminator 2 - They specifically say John Connor was 10 years old. Terminator 3 - In the prologue, John Connor says a terminator was sent to kill him when he was 13. I just can't see how they manage to let inconsistencies so blatant as these, past the whole production process. I think there was a similar thing with the chronometer on the ship between Planet Of The Apes and Beneath The Planet Of The Apes.