As a hunter-gatherer society, they were highly dependent on each other for survival.
Such concepts would have been part of everyday life in hunter-gatherer societies.
After studying modern hunter-gatherer societies, Diamond found that they work between 12 and 19 hours per week.
By the 17th century the first Europeans found them well-established as a hunter-gatherer society in control of the river.
This kind of economy is present, for example, in hunter-gatherer societies.
For much of human history, people lived in small hunter-gatherer societies.
Even so, in the simplest hunter-gatherer societies, few people survived past age 50.
Clearly, he believes that it is a genetic legacy from the long period of hunter-gatherer society.
Nobody really seemed to know much about them except that they had a primitive hunter-gatherer tribal society.
In all hunter-gatherer societies, women appreciate the meat brought back to camp by men.
