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Health is a state of physical, psychological theskfeed and social well-being during which disease and infirmity are absent. A variety of definitions have been used for different functions over time. Health can be promoted by encouraging healthful actions, such as regular bodily exercise, and by decreasing or avoiding unhealthful actions or conditions, corresponding to smoking or extreme stress. Tool use remained relatively unchanged for most of early human history. Approximately 50,000 years ago, using instruments and sophisticated set of behaviors emerged, believed by many archaeologists to be linked to the emergence of absolutely modern language. The time period "technology" rose to prominence within the twentieth century in connection with the Second Industrial Revolution. Genetics have also been explored, with people understanding genetic engineering to a sure degree. However, gene editing is widely divisive, and normally involves some degree of eugenics. Children&#