The Growth of Knowledge


Knowledge is the engine that drives human development – and it has been throughout history. Knowledge expanded in the hunter-gatherer days with the invention of fire. In those days, a human obtained all its food by foraging. Although the source of food did not change, fire allowed humans to cook food and consume more calories. The human brain expanded with this caloric increase, and soon we invented language – the first in a series of innovations that drove the growth of knowledge.

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