I disagree with the first question. It said, what is the single most important thing you need to survive in the wild, food, water, or warmth. It said water, I disagree. It said 3 days without water and you die. Well, if you have hypothermia you’ll die a lot quicker than that. Also, you can die of hypothermia in temps as high as 50 degrees if the conditions are right (wet, windy). To see how quickly you can go downhill, check this test Moine did at the Swamp: Hypothermia Testing -- Don't Do This At Home