[Unklejoe]

I think a lot of the fear comes from the fact that if/when such a system is created, its knowledge and capabilities will only be equal to a human's for a short period of time, after which it will probably surpass any human capability at an ever increasing rate. Then, we would be suddenly at the mercy of it, which scares a lot of people. It’s very hard for us to try and predict the actions of something that could end up being thousands of times smarter than us.