How Robots Improve Performance

Nowadays artificial intelligent robotic technology which is one kind of popular tool to help workers to work in factories or offices or serve clients in restaurants or shopping centers.  It brings this question:  Can artificial intelligent robotic machine men assist workers to raise productive efficiencies or improve service performance?  ?  All workers are replaced by artificial intelligent robotic machine or some workers are replaced by artificial intelligent robotic machine which can raise more productive efficiencies or improve better service performace ? In my this book I shall indicate some cases to explain how and why (AI) robotic machine men can either raise productive efficiencies or improve service performance or they cant either raise productive efficiencies or improve service performance in any situations.  Managers or employees can evaluate whether how to apply (AI) robotic machine men to assist them to work in their workplaces in order to achieve the most beneficial advantages to their organizations different departments raising productivity and efficiency and service performance improvement aims.