Man started adapting the natural resources around him to suit his purpose for food, he killed animals with the help of stones then he chipped to make them sharp to hit better , he made clubs and extended his arms to get better leverage . A stone thrown at larger speeds was deadlier, he made bow-gun , then bow and arrow. Later, he discovered that some of seeds he was eating could be grown and growth was better if earth was dug before sowing of seeds He designed the plough ploughing the fields was hard work, so he modified the plough that fields was hard work, so he modified the plough that could be pulled by domesticated animals. he discovered the idea of a wheel and made a cart and petter's wheels. in fact, history of evolution of human society, and good life that we enjoy today is nothing but story of man designing new tools and michenies which in broadly termed as process of design
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