Stupidity: When they raid the warehouse as the criminals are trying to leave town, they load the girls into.a white van. A man (Bruce Willis) wearing a ski mask gets out of the passenger side and covers with his pistol as they load the girls into the van. The entire time the slide on his weapon is back, so the gun is not ready to fire.
Stupidity: When the flying snowmobiles attack, Bond tells Elektra to go into the gully, and he'll lead them into the trees...completely ignoring the fact that these bad guys are here to kill her, so why would they follow him instead? Of course they all do. Either a plot contrivance or a blatant set up, which he doesn't remotely consider.
Stupidity: At the end, the police inspector talks Bruce Lee into surrendering, and about 8 people (including the inspector) escort him out of the school. As soon as they're outside, Bruce sees a formation of heavily-armed police preparing to fire. Realizing he was betrayed, Bruce Lee charges, screaming, straight into a barrage of gunfire as the action freezes for credits. However, before the action freezes, there's NO reaction from anyone standing behind Bruce Lee, even though they are directly in the line of fire. Even the police inspector (who knew the police gunmen were waiting outside) just stands there instead of immediately diving for cover.
Stupidity: When the two Russians are walking past the security guard after killing Gregor, they are just allowed out without being detained because one of them shows a Chilean passport. The French gendarmes are not that incompetent. They would detain the men until everything is (or is not) cleared up. (01:49:05)
Stupidity: Joe's second homicide aims to be ruled as accidental death, but Joe's plan involves a furious struggle with the guy underwater, who claws and bites at his arm, as he applies pressure to his shoulder and neck. Moreover, their struggle happens close to the water surface but the bodyguard who is there does not hear or see anything. (00:35:00)
Stupidity: Kora and Gunnar arrive at the town to find the rebel Bloodaxes via a contact of Gunnar's. They literally see this contact being hauled out of a bar by bounty hunters who work for the Imperium...and then walk straight into the same bar and start openly talking about needing to find the rebels right in front of the bartender and other patrons, who for all they know are all Imperium-aligned.
Stupidity: Four H.S. seniors are sitting in an SUV. A storm quickly intensifies and Billy gets out of the back seat to get a better look (wipers are on "fast"). Seconds later, Billy spots a tornado coming. Marcia (driver) tells Billy to "get in." Needing to flee the fast-approaching tornado, Marcia wants to leave as soon as Billy is in the SUV, so she yells, "Billy, get in!" The tornado is feet away when Billy closes the door - whew, he's safe! Marcia STARTS the SUV when the tornado starts bashing it. (00:01:14 - 00:01:38)
Stupidity: A movie always needs extra conflict, but Julie's reasoning for walking out on Marcus and Mike is one of the dumbest. "If his wife can find us, I'm a LOT better off on my own." What sort of logic is that? She's the wife of his best friend. Of course she knows where he lives. (01:32:45)
Stupidity: For being a ruthless race of conquerors, every Kree in this movie is awfully cautious when pulling the trigger. From the kree soldiers who don't shoot the prisoners who were already set to be "ejected into space" (instead of being shot on the spot) nor the space monster attacking them with tentacles, to Yon-Rogg and Minn-erva who do not shoot Carol when she is about to destroy the engine (Minn-erva especially should have no problems doing that and it's the whole purpose of a sniper). The best bit about the shooting idiocy happens when "Just a girl" starts playing, and Minn-erva with 2 soldiers armed with rifles from an elevated position do not shoot their precision rifles but rather jump down on the same level as Carol for absolutely no reason. Which soldier with a rifle would get closer to the enemy?
Stupidity: The metro police officer (and co-conspirator) went to the old cement factory where the other bank robbers were. Since the police officer (accomplice) wanted the money and did not want other police officers to be nearby, he called 911 and made an anonymous false report stating he spotted the person police were looking for and misdirected them further away. Maybe a good idea, but he made this call using his own cell phone. (01:12:20)
Stupidity: The supposed criminal mastermind had exactly what he wanted right at the beginning; all he wants is killing the girl, and he knows (he says it himself) that he is facing just mall cops who carry no weapons. But he utterly wastes for no reason the 'first contact', when his intentions are not known to the occupants. If only he had a gun, or brought along a guy hiding a weapon instead of 'suitcase full of bribe money dude' (which only shows how easy it would have been for him to have backup), he could have easily killed everyone through the doors when they were sitting ducks, with no fear of retaliation whatsoever. Nobody as ruthless and daring as he supposedly is, would show up unarmed for no reason.
Stupidity: Two oil rig workers were looking at two young ladies in bikinis who were sunning themselves on a boat/yacht. One oil rig worker said, "That's where we should be right now. With them, enjoying the sun, instead of baking in it." Both men had double layers on - a jacket or sweater over a jersey or T-shirt - and one man was wearing a tossel cap. Even if it gets cold on the rigs at night, they did not need to be dressed in warm attire during the sunny daylight hours. (00:10:35)