Waitig to be educated is the bane of knowing anything. Ayn Rand said that the guy who taught people to use fire was probably burned at the stake, and the guy who invented the wheel was probably torn apart on a rack. that's how people are. 90% are just the dead weight in the keel, which the sail has to drag thru the water.
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If you check out the Reddit.com and most forums, everyone is all hung up on the idea of having such a wonderful shelter and then they starve. The Kochanaki supershelter is all you need and Ideally, you want an igloo, where it's cold. You wont be doing anything in side of the shelter, anyway, especially one that's full of smoke! :-) So keep it small, so you dont waste your body heat or the heat put off by the hot stones. You dont want a fire inside of your shelter, or to have to constantly keep a fire going, because you lose so many calories processing and hauling wood. People who dont even understand THAT mch win only by being fat and/or lucky