Question: Does anyone know what kind of keyboard Matthew was using in his apartment?
Question: The movie takes place on the July 4 weekend, so why is Lucy living at her dorm at Rutgers University? Wouldn't the university normally be closed during the summer months?
Question: Is the "Fire Sale" procedure used in this movie a real-world idea or just a movie creation? Could it ever happen?
Question: Is there a reason why John McClane's previous exploits aren't mentioned in this film? He is known, and mentioned for his association with, Nakatomi in DH2 and for Dulles airport and Nakatomi in DH3 but in this one, none of his past "adventures" are mentioned bar a couple of subtle almost hidden quotes (eg. the agent Johnson scene). Is this due to any kind of copyright thing or ownership issues between the films or just that they weren't mentioned by any characters? Just seems strange to me that the previous exploits aren't talked about even a little bit.
Question: Throughout the film, Thomas Gabriel is shown be to an extremely intelligent and talented computer hacker with enormous resources at his disposal as well as an equally talented entourage of computer hackers. My questions are, why did he hire other hackers to write code for him and then kill them? He must have realised that this would draw attention? Couldn't he or any of his colleagues have done it themselves instead?
Question: Completely ignoring the fact that the road assist thing in the car wouldn't work due to the networks being down, why did Matt go through all that trouble? Wouldn't it have been much faster for John to speak to them and say something like "This is officer John McClane, badge number ***** I need to use this vehicle for a police emergency" or something like that?
Question: If the movie plot is over a 4th of July weekend, wouldn't offices be closed? It appears to be a regular non-holiday weekday with so many people working.
Question: Later on in the film, Matt says to Gabriel that it would take him months to download the data unless he eliminated the congestion and then realises that the fire sale was to do just that... Kick everyone off all the networks so that Gabriel can use all available bandwidth. But Gabriel hacked into the Government the night before, which triggered the servers at Woodlawn to download the data as a backup. If it would have taken months to download the data BEFORE the fire sale, why were the Woodlawn servers able to download the same data in less than a day?