Plot hole: Even if boys of that age had the technical know-how to quickly repair Jeeps over 20 years old (seriously?), any gasoline in the tank would have long become unusable, the tires and lines would have rotted away, and the electrics would all be dead. Now if it was in the desert or a dry garage, it may have survived, but it's on a tropical island, in a shed that has all sorts of holes in the roof, leaving it exposed to every kind of weather the island could throw at it. In addition, the kids start the jeep with the small battery of an ATV, which cannot produce enough power to crank a Jeep engine.
Plot hole: Joy and Sadness are stuck outside of the control center. They are trying to figure out how to get back, and encounter maintenance workers who are discarding old memories. The maintenance workers show that they have the power to send memories back up to the control center to be played. Why couldn't they send the core memories that Joy had back up the same way? Better yet, why not use that method to send Joy and Sadness back up to the control center? The director of the film is even aware of the plot hole, and said "Yeah, well then we wouldn't have a third act," before explaining how the idea of recalling memories was added in later, "box[ing] [the screenwriters] in a corner a little bit."manthabeat
Plot hole: The only reason Kate is brought onto Matt's team is to give the CIA legal authority to operate on US soil. Given that he already has DEA agents and US Marshals on the team, all of whom seem to be fully aware of what he is doing and have no problem with it, this doesn't make a great deal of sense. Her idealism makes her a poor choice for the sort of operations the team is doing, and there are already domestic US agents available.
Plot hole: There's no good reason for Hinx to attack Bond on the train. Blofield was expecting him to turn up at the crater, that's why he sent the car to pick them up.
Plot hole: Before the IMF team can exchange the yellow cards for the access control, they first need to know the data format/file type in which the access rights (retina, gait, fingerprints...) are stored. Otherwise, the computer will not recognize the data on the card, and display an error to the maintenance personnel. In order to figure this out, they would need to steal first some of these yellow cards and analyze the data on them, before they can fake a card which will be accepted by the computer.
Plot hole: Gary Winkle appears as the supposed fourth guy from Winterfest, in the first film. He is shown later in this film in the alternate future, and appears to be around the same age as before. Meanwhile, all of the main characters are much older, and Adam's son is already an adult by now. (00:03:00 - 00:41:00)macaryl95
Plot hole: It's a good thing Jake left the Corps....here he is lying in the bed of a pickup with a full-auto weapon, and he can't take out the radiator of a vehicle 20 feet back, with not one, not two, but 3 clips of ammunition. A few rounds through the radiator, coolant is gone, and the motor seizes.goofyfoot
Plot hole: When Bryan goes to the Russian bad guys' heavily-guarded apartment/office building, they make a point of saying that a guard upstairs monitors a camera and operates the elevator allowing only certain people to come up. Brian manages to trick the elevator operator into letting him up, then proceeds to kill him and all the other guards on the way to the apartment. How does he end up using the elevator to get back down when everyone is dead? And who is letting the cops up to the apartment when they show up well after everyone had been killed?Hurls34
Plot hole: Paul should have been shocked as he put his vibrating fork onto the live cable if it was conductive in order to shock the bad guy.