Im stranded on Mars.I have no way to communicate with Earth.Im in a Habitat designed to last 31 days.If the Oxygenator breaks down, Ill suffocate. If the Water Reclaimer breaks down, Ill die of thirst. If the Hab breaches, Ill just kind of explode. If none of those things happen, Ill eventually run out of food and starve to death.So yeah. Im screwed.