Google's Deep Mind AI has a new trick: taking a nap

Google has been pretty far ahead of the curve when it comes to its artificial intelligence research. The world was shocked when its AI beat a top human player at the game of Go. More recently the company taught AI to use imagination and make predictions. Google is making its AI more human -- to a startling degree. At first glance, it might seem counter-intuitive to build an artificial agent that needs to'sleep' – after all, they are supposed to grind away at a computational problem long after their programmers have gone to bed.