This article discusses the social impact and technical advances of artificial intelligence. It compares the social impact of AI in the last fifty years with the social impact of the introduction of electronic appliances and internal combustion engine in the fifty years between 1890 and 1940. The article also talks about the benefits and threats of AI in different fields such as society, education, and work. It also discusses the arguments of I.J. Good, a sentient cheetah, and a sentient elephant regarding the most important quality for building ultra-intelligent machines.