Human beings' ability to make tools - from the first simple stone chopper or blade to the invention of the computer chip and rockets - has allowed our species to excell beyond all other animals in our ability to control our physical environment. Technology has affected all areas of human life - how we produce food, the type of shelter we live in, the forms of economics we have developed, the length of the human life span, and even the very limits of the world and universe we inhabit.
In addition to the invention of stone tools, which allowed human to become more efficient hunters, may other early technological innovations, such as the domestication of plants and animals and the development of the plow, also increased human food productivity, the efficiency of human labor, and, thus the size of human groups.
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