Former Google engineer Ray Kurzweil predicts humans will achieve immortality in 8 years through AI, Brain-Computer Interfaces, and nanobots.<li class="">Kurzweil has a history of accurate technological predictions, including the defeat of the world's greatest chess champion by a computer in 1997.Singularity is a concept of AI exceeding human intellect, which Kurzweil predicts will occur by 2045 with AI passing the Turing test in 2029.Kurzweil believes that a human-machine synthesis will improve human capabilities through the use of nanobots and nanomachines.