I believe that to enjoy a serious film, especially a film about Space travel, it's essential that storylines and plots are researched so as to appear realistic and legitimate. The minute I start to see massive holes in the storyline and ask questions to myself it totally detracts from the viewing experience, in my case, it ruins the whole thing. Two giant problems in the storyline. 1 how did the Stowaway get into the bolted secure crawl space,how long had he been there, it just would have been impossible for him not to be missed, he was in the storage panel where the Scrubber or device for filtering C02 out of an LSS was?. 2 Apollo 13 comes to mind, the same component or piece of kit, and central to the storyline of that great film. If NASA and the crew could resolve the situation and come up with a fix back in the 70s, why couldn't this lot. in the 21st century, follow suit, Did the writer of this fiction, not watch Apollo 13, clearly not. It ruined what could have been a good movie