. . . "It is fully possible to use instead of stone, such materials as sea shells, to cut and flense a fish, for example: wooden arrows and bows and spears. fire hardened ??? and you can make fire with just a bow and some bits of wood, by friction: When people talk glibly of ???sustainability??? and hoping for the collapse of civilisation, this is what they are in reality hankering for, and indeed this i" .