Humans are creatures who think and are always equipped with curiosity. and Curiosity is what drives to recognize, understand and explain the natural phenomena, and strive to solve various problems encountered. From the urge of curiosity and attempts to understand and solve problems causes humans to gather knowledge.
The acquired knowledge was initially limited to the observation of existing symptoms, then increased with the knowledge gained from the results of his thinking. Then the knowledge gained continues to be developed so that humans to date continue to grow, humans can create some objects to meet daily needs.
Read next
From @hr-one