10 Horror Movie Idiots Who Made Simple Solutions Look IMPOSSIBLE
7. Freezing Kane - Alien
Early in Ridley Scott's Alien, Kane (John Hurt) is attacked by a Facehugger and, against quarantine protocol, brought back onboard the Nostromo.
Flouting quarantine isn't really the stupidest thing here - it's bizarrely refusing to freeze Kane until they get back to Earth. It's all the more infuriating given that Parker (Yaphet Kotto) even mentions this aloud three times but the rest of the crew effectively ignores him.
While it's worth mentioning that android Ash (Ian Holm) was ultimately only concerned with preserving the alien while the crew were considered expendable, wouldn't it have also made more sense for him to freeze Kane, rather than risking the alien's fate against the Nostromo's crew?
In the end refusing to freeze Kane was a net-negative result for everyone: it led to every Nostromo crew member save for Ripley (Sigourney Weaver) dying, and The Company not getting the alien sample they were hoping for.
You can argue that perhaps Ash didn't know if the freezing process would harm the creature, or his morbid curiosity simply won out, but turning Kane into a temporary popsicle would've best served the interests of everybody onboard.