Life
The Biological Aspect
deep evolutionary time
Did we make tools, or did tools make us?
Tool use is older and wider than humanity — chimpanzees fish for termites, crows bend wire, otters keep anvil-stones. In our own line, hand, brain, and tool evolved together in a feedback loop, so that the human is less the inventor of technology than its product.
01The extended body
Ernst Kapp called tools 'organ projections': the hammer projects the fist, the lens the eye. André Leroi-Gourhan went further — as the hominin hand took over grasping and striking, the jaw was freed, the face flattened, and the cortex that had steered teeth and claws was freed to steer symbols. Walking upright freed the hands; freed hands selected for the brain that used them.
02Technology before humans
A New Caledonian crow that crafts a hooked twig, a chimpanzee that selects and trims a termite-probe, a wasp that tamps its burrow with a pebble — each shows that toolmaking is a strategy life reaches for again and again. Technology is not a human invention sitting outside nature; it is one of evolution's recurring moves, which our lineage simply pushed to an extreme.
“We did not step out of nature to build tools. Building tools is one of the oldest things nature does.”
In short
- Tool use appears across crows, primates, otters, octopuses — it is convergent, not unique.
- Hand, jaw, and brain co-evolved; the tool was a partner in our anatomy.
- Kapp's 'organ projection': every tool externalizes some part of the body.