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Trivia
Broderick changes school information from his home computer just as he does in Ferris Bueller's Day Off. Both mothers were also real estate agents. See more...
Factual error: During the part where they're in NORAD and watching all of the Soviet "nukes" hit various bases in the US, a base in northern Maine is listed as, "Loring AFB 43 Bomb Wing." This was a real air force base, but it was the 42nd Bomb Wing that flew B-52s out of Loring. The 43rd Bomb Wing did exist, too, but it was based at Andersen Air Force Base, Guam, in the South Pacific.
Plot hole: The whole point of playing tic-tac-toe in the end was so Joshua could learn that the game would always end a tie. But take a close look at the second game he plays in the war room. Two "X"s and two "O"s are played in boxes where all Joshua would have to do is put the next X in the top middle box, and he would've won that game. A human could conceivably miss that, but since it was just established that Joshua was playing himself (of players "zero"), a computer wouldn't have missed such an easy move, especially since the reason Joshua plays anything is "to win the game".
Other: While it makes for a great story for the movie, the reality is that all computer systems used by government agencies - especially in the DoD - are required to provide their source code for thorough inspection to ensure there are no back doors, hidden subroutines or other types of software code that are not relevant to the task designed for. Given the critical nature of this system being in control of launching nuclear missiles, the reality is that none of the games that Falken wrote - much less the whole routine to allow it to simulate a game like this - would still be in, for obvious reasons. Of course it could be argued Falken hid this, however given the lack of complexity for a computer of this era, it's highly unlikely.
Plot hole: Given the number of possible combinations the launch code could be (over 3600 trillion possibilities) it makes no sense that W.O.P.R cannot process that significantly quicker given how easily it's able to calculate thousands of ICBM impacts, damage inflicted, casualties, etc. for each "War Scenario" at the end as quickly as it does to determine a winner.
Continuity: The tour group comes in and they trick the black lady into pressing the red "launch" button that displays the welcome on the screen. Just before she presses it she has a 35 mm camera hanging around her neck, but in the next shot of the group standing in front of the panel her camera is gone. (More than likely because someone thought "Hey! They would never allow cameras in NORAD!")






