History IdiotBall / LiveActionFilms

* In the [[Film/TheThing2011 2011 prequel]] to Creator/JohnCarpenter's ''Film/TheThing1982'', Kate warns the group not to be alone because one of them could be the Thing... and then goes off alone. In another scene, the Thing detatches one of its hands to have it grab onto another character's face, while everyone else just stood there. When the reviewer group WebVideo/MediaWhorz reviewed it, Birdy reffered to the genre's use of this trope as "Horror Stupidity Syndrome."

** In the first ''Film/JurassicPark'' movie, while Grant and Ellie are holding back a velociraptor, a gun that was knocked out of Grant's hands and is just barely out of their reach. Lex is meanwhile hacking into the security system, and Tim, not doing anything else, decides to just stand off to the side cheering her on instead of picking up Grant's gun. Granted the gun was jammed but Tim wasn't likely to know that, and even ''then'' grabbing the gun would have been more useful than pounding on Lex's back while she tries to focus on operating the computer.

* In ''Film/MinorityReport'', John gets pegged for a future murder. Since the date and time of the murder are known, instead of going through a lengthy ClearMyName plot, he could have just skipped town for a couple of days, then after the date the murder was supposed to have occurred he could calmly come back and figure out who set him up without having to dodge his former collegues.

** It was explained better in the original comic. There, after Leonidas rejects him, Ephialtes throws himself off a cliff to his death, but, unbeknownst to Leonidas (who thinks him dead), he survives, and is hungry for vengeance against the spartans.

* The police drama ''Blitz'' is a pretty intense and tight movie about tracking a vengeful cop-killing lunatic, but at one point it hits a scene that would have completely derailed the entire movie if a single character had not acted like a moronic sheep. An informant is moments away from telling a reporter the name of the killer, but he first decides to go count the money he's being paid in the bathroom of the pub where they're meeting. The killer, however, knows he's there and follows him into the bathroom. The killer confronts the informant, who quivers in panicked fright, until the killer calmly and almost casually pulls him into a bathroom stall and drowns him. If the informant had instead bolted for the door leading back into the ''crowded, public pub'' where at least a dozen people were located and started screaming for help at the top of his lungs, he likely not only would have survived but the killer would have been caught either in the pub or immediately afterward once his name became public knowledge.

** The Resistance discover that [[spoiler:Marcus is part human and part Terminator. Their next course of action is to interrogate it. What? Shouldn't the Resistance dismantle it instead and study its remains? Haven't John learn that Terminators are infiltrators and can't be trusted?]]

** The Resistance discover that [[spoiler:Marcus is part human and part Terminator. Their next course of action is to interrogate it. What? Shouldn't the Resistance dismantle it instead and study it? Haven't John learn that Terminators are infiltrators and can't be trusted?]]