Humans are "Tool Complexes"

Humans are tool complexes—hands for certain tasks, feet, ears, teeth. etc., for others. Using their human tool complexes, human minds, comprebending variable interrelationship principles, invent detached-from-self tools—the bucket can lift out more water from the well than can a pair of cupped human hands—that are more special-case-effective but not used as frequently as their organically integral tools. Humans invent craft tools and industrial tools. The latter are all the tools that c...