In arctic or alpine areas, survival kits may have additional cold weather clothing (winter hats and gloves), sleeping bags, chemical "hand warmer" packets, sun glasses/snow goggles, snowshoes, a collapsible shovel, a snare wire for small animals, a frying pan, a camp stove, camp stove fuel, a space blanket, matches, a whistle, a compass, tinder, medical equipment, a flint strike, a wire saw, extra socks and a tent designed for arctic use.
If I’m willing to cut my spending from my retirement savings by about 10% if my portfolio craters–going from say $45,000 to $40,000–that flexibility lets me mostly dodge the worst-case scenarios where I run out of money before I run out of road. (More precisely, this flexibility suggests that in about 95% of cases in past, my savings would sustain retirement over three decades.)
And, of course, people aren't going to stop wanting to get drunk just because they can't pop over to the corner bodega for a six pack whenever the urge strikes. Portability and long shelf-life make liquor of all types a valuable trade good -- people will kill to get a taste of the delicious bottom-shelf leftovers from your local dive bar when their only other option is the equivalent of prison wine.

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