quick thought, even if you are stipped of everything except the clothes you have on, no knife, no fire starting stuff of any sort here's what i would do first, find a good chipping, flaking, and stone for a knife/fire starter, when you start making your knife you use the sparks as you chip at it to start your fire with maybe shredded string from your clothing the straw then something like corn stalks to small twigs, to branches to a lot more branches, to a big fire, you make your temporary knife out of rock then you have two of your major survival items, fire, and a knife with the fire you have you keep warm, cook, clean water and the knife you lash to a stick to make a spear or cut strips of clothing to make a bola to catch small game like birds and rabbits, if you have access to any old car/tractor/plow/anything with a good bit of metal you find suitable size/shape piece of metal and start forging it in the fire and using a big rock as ur anvil and another piece of metal as your hammer, you shape your knife then sharpen it with stone, then you have a good heavy/strong knife that's my opinion in 2 days i'm going in the woods to make my own knife with metal scraps from an old tractor and plow, wish me luck
