On Saturday, British mathematician Alan Turing would have turned 100 years old. It is barely fathomable to think that none of the computing power surrounding us today was around when he was born. But ...

On the left, Turing’s original test involves a human interrogator (C) trying to identify a machine (A) that imitates a human assistant (B). On the right, the modern Turing-like test replaces the human ...