The book surveys archaeological evidence for the origins of man and traces the development of toolmaking and the spread of agriculture.
Most theories see language as helping how tools are used, and toolmaking and tool use as learned.
The above considerations do not, however, imply that symmetry has played no part in the process of toolmaking.
Wolpert thinks that asymmetry may have evolved in the context of complex motor skills such as toolmaking because it permits cooperation rather than competition between the hemispheres.
The step up to staged toolmaking (first shape a core, then knock off flakes) at 400,000 years ago is far more impressive as evidence of enhanced cognition.
Indeed, there is no compelling archaeological reason to grant toolmaking any special place in the selective forces directing the first three million years of human cognitive evolution.
He had to understand electronics; he had to do some plumbing, carpentry and toolmaking.
We have worked with the toolmaking industry to encourage firms to benchmark themselves against the best in the world.
