In 1820 Henri maillardet has artificial the first robot in the world. Its like a caterpillar and has a duty to be a home decor. But currently it develop to work like a human. however, there are a main difference between robot and human; expenses and performance.
Firstly, human has a lower performance than a robot. the performance of human is not sure, depending on their health and emotion. but robot have followed the order certainly. Robot has a more performance than human and low error rate. Many companies choose robot because it has a high performance and a low error rate.
secondly, robot has high expenses than human . for the high performance robot need a high grade parts and have a high price according to moreover robot need repair periodically. unlike human that they just use their ability