In his 2005 book "The Singularity is Near," the futurist Ray Kurzweil predicted that the Singularity -- the moment in which machine intelligence surpasses our own -- would occur around the year 2045. Sam Altman believes it's much closer. In a blog post published Tuesday, the OpenAI CEO delivered a homily devoted to what he views as the imminent arrival of artificial "superintelligence." Whereas artificial general intelligence, or AGI, is usually defined as a computer system able to match or outperform humans on any cognitive task, a superintelligent AI would go much further, overshadowing our own intelligence to such a vast degree that we'd be helpless to fathom it, like snails trying to understand general relativity.