Relying on more complex tools increase the ability to teach
Humans are most capable of passing knowledge down the generations.
Simple and complex tools generally improve through generations. A study found that with complex tools, teaching consistently led to more improvement compared to other conditions.
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Our ancestors could have started to make modest improvements to simple tools without the need for teaching.
However, as tools became more complex, teaching started to become beneficial. Improved teaching skills would, in turn, allow for the creation of more complex and efficient tools.
Humans evolved on a diet very different from today's eating habits. To be healthier, leaner, stronger and fitter, we must re-think our diet and remove some of the food groups we consider basic.
Paleo fans tend to overlook the fact that hunter-gatherers were not models of pristine health. Palaeolithic humans suffered from parasites, infectious diseases, and even atherosclerosis (hardening of the arteries).
Invention often comes in stages and phases, when existing technology is looked at and mixed with new creative insights, a process that sometimes takes thousands of years.
This makes it hard to pinpoint the exact time and place a certain object is invented.
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