Stupidity: Towards the end, one of the soldiers (Kieran) gets trapped in the store with a group of child hungries - he was injured in an ambush, but is still lucid/human. He threatens them with a grenade, even though he knows that throughout the story they are mindless and hardly capable of reason. Fair enough as a bad character mistake, but then to allow the hungries to close in on him and not detonate the grenade is inexcusable. Soldiers are trained to fight and, to a degree, accept even death, to obtain an objective or protect the others in their "unit." Dying anyway, he should have blown up the hungries to at least whittle down their numbers.
Suggested correction: A soldier not having the nerve to kill himself is hardly "stupid." Suicide goes against the human desire for self-preservation. Even when faced with assured death it would still be difficult for someone to actually kill themselves and it can't be considered a mistake if someone fails to work up the nerve to do so.
Perhaps so, but soldiers accept that, to a level, their lives are expendable to serve the mission, greater good, etc. Some even seek out a honorable demise. Having many servicemen in my family, this is something repeated frequently. I accept your position as valid! He chose not to use the grenade when faced with his being eaten, and it's tragic. Solely in the context of the movie, it just seemed odd to me then-an opinion.
Stupidity: When Sook-Hee and Hideko are leaving the mansion to meet up with Fujiwara, they run past a rope and noose tied to a tree. Later on, it's revealed that this rope was tied to the tree because Hideko attempted to hang herself. Despite abandoning the suicide attempt and coming up with a new plan to scam Fujiwara, they leave the rope tied to the tree, even though this could potentially expose the scam to someone at the mansion. (00:53:32 - 01:47:15)
Stupidity: When Doss buried the wounded soldier, leaving one eye out made no sense. It did nothing to help him. All it did was make it easier for the Japanese to spot him. It would've made sense to leave his nose and/or mouth out, so he could breathe. He did not need to see.
Suggested correction: A person who is unable to see is more likely to panic. When Doss buried the wounded Marine, he asked him to take a deep breath and trust him. By leaving one eye open, it allowed him to see the gravity of the situation as IJA soldiers walked by and maintain eye contact with Doss who hid under a dead Marine. After the suspicious IJA soldier bayoneted the body over Doss, he looked directly at where the wounded man was buried and kept walking. It was a crude method, but it likely saved them both.
Stupidity: During the movie, the bad guys keep the main character alive and free to roam the facility at will (even if they made him sign an incriminating form at the very beginning stating he's an inmate) doing absolutely nothing to restrict his freedom till the very end - he even retains personal effects like his broken Rolex and lighter, his wallet full of cash! He breaks into every forbidden area, picks up fights, damages property, escapes multiple times and 'corrupts' the person the whole facility is built for. He is worth absolutely nothing to them and has nobody waiting for him or that will look for him.
Stupidity: The chef/cook of the house has his rifle, and he knows Morgan lost control and pretty much killed everybody on the premises. He comes face to face with her, but he lowers his rifle instead of taking the subject (Morgan) out with a shot. There is no logic here but to only pro-long the film. There's no reasoning with a scientifically created subject which is killing everybody it comes into contact with. (01:09:00)
Stupidity: Gus is a blatant example of Deus Ex Machina. 1: The % of his pod malfuntion was too low. They mention multiple times how low the chances of a pod malfunction are (Jim's is the first in history), and then it happens twice? Jim's med-scanned him but Gus' didn't (?) so he had 610 things wrong with him. So he woke up dying 2: Gus' existence has only one objective: to give Jim the armband. 3: Before anything else can happen with Gus, he dies conveniently. Gus' existence had no other reason. We didn't care about him emotionally. He didn't advance the plot. He provided no new info or answers to questions. (failure cascade is easily discernible by Jim once he has access to the bridge) It would have been easier to just let Jim find an armband/access another way. DXM: holder of the macguffin magically appears (pod failure) delivers the macguffin (armband + code) goes away (dies without explanation) it's downright shameful.
Suggested correction: This is all your opinion of a plotline - admittedly, an utterly lame one - not a film mistake. Film criticism and error spotting are two different things.
In addition, the statistics about pod malfunctions obviously referred to spontaneous malfunctions, which had never happened. These malfunctions in the movie, however, were not spontaneous – they were caused by catastrophic failure of the ship itself due to an asteroid hit.
