In the beginning, man never deliberately set out to invent things. Man's first inventions were accidently discovered, or built because of the needs, or the desire, to improve a hard life. So, early inventions were simple tools devices with which to cut, to hammer, to dig, or to throw. These tools, at first functioned as extensions of human hands. Much later man's inventiveness extended to his eyes, ears and legs.
Eventually, he even learned to fly in machines. However, a million years ago, primitive man could only shape stones and sticks to give his already skillful hands added power.
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