Craft vs Industrial Tools

All of humanity's tool extensions are divisible into two main groups: the craft and the industrial tools. I define the craft tools as all those tools which could be invented by one man starting all alone, naked in the wilderness, using only his own experience and his own integral facilities. Under these isolated conditions he could and did invent spears, slings, bows, and arrows, etc. By industrial tools I mean all the tools that cannot be produced by one man, as for instance the S.S. Queen M...