Predictors of the singularity argue that AI will become more and more intelligent, once it is created, because its nature as a network of information free from the interface complications that characterize human interaction will allow it to improve itself much faster than human beings could ever improve it. This will mean that, as soon as AI is developed, incredibly intelligent AI will follow in relatively short order.
Ray Kurzweil, a well-known and outspoken futurist, also argues that the singularity and AI itself are inevitable because technological growth follows Moore's Law of exponential growth, and enough advances have been made in AI technology already to project, using the curve of their development, the occurrence of the singularity.