Independence Day

They disable the destroyers by uploading a computer virus into the mother ship, which is blown up with a nuke.

The Green Flame Torch

Independence Day mistake picture

Continuity mistake: When General Grey tells the President not to engage until they have visual, in the President's close-up the exterior of this F/A-18 Hornet is quite different than what was shown in the earlier shot, as the canopy closed over him. All the rivets around the canopy have disappeared and the 'danger' triangle is much closer to the name Patrick, the seat differs, etc. Plus the fact that the canopy and hull are actually one unit in the second shot. (02:02:15 - 02:03:15)

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Captain Steven Hiller: Y'know, this was supposed to be my weekend off, but noooo...you got me out here draggin' your heavy ass through the burnin' desert with your dreadlocks stickin' out the back of my parachute. You've gotta come down here with an attitude, actin' all big and bad...and what the hell is that smell?! I could've been at a barbecue!

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Trivia: According to the Director's commentary, Twentieth Century Fox Film Corporation did not want the film to be released under the title "Independence Day" to avoid legal complications (specifics weren't disclosed as to what the problems might be, but it's also why the abbreviation "ID4" was used). Roland Emmerich (director/writer) and Dean Devlin (writer) needed to justify the title, so they added the rousing bit right at the end of President Whitmore's speech at the hangar when he ends with, "The 4th of July will no longer be known as an American holiday...today we celebrate our Independence Day!"

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Question: It's been shown in the film the the aliens are technologically more advanced than us. Then, how come, with all their technology, they were unable to defend themselves from something as simple as a computer virus?

Socks1000

Answer: Remember that the aliens had to interface with our satellite computer code first...David simply "reverse engineered" the code to create the virus. When it was uploaded, they didn't have enough time to combat it.

Chosen answer: Its supposed to be an exercise in demonstrating how the aliens underestimated their opponent, but in reality it's merely a convenient plot device.

GalahadFairlight

Answer: It was also a bit of a tribute to "War of the Worlds", in which the alien invaders with much more advanced technology ultimately succumbed to ordinary terrestrial pathogens in the original novel by H. G. Wells as well as its many screen adaptations.

zendaddy621

Answer: I was wondering the same thing. Since the Harvesters had our satellites meant they could eavesdrop on every single conversation. David and other people in the facility probably put up a firewall on the computers and cameras, so that the aliens couldn't see or hear what they were planning on doing.

Answer: Maybe there were no viruses in the planet where these aliens came from so they didn't have any countermeasures against them.

Answer: They could defend against it, hence why they bring the nuke. The virus drops the shields, and the nuke destroys The Mother Ship. David even says that the shields will be down for a few minutes.

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