A happy Kurzweil took to his blog to announce his appointment:
"I've always worked to create practical systems that will make a difference in people's lives, which is what excites me as an inventor.
"In 1999, I said that in about a decade we would see technologies such as self-driving cars and mobile phones that could answer your questions, and people criticised these predictions as unrealistic.
"Fast forward a decade - Google has demonstrated self-driving cars, and people are indeed asking questions of their Android phonesâ€¦
"I'm thrilled to be teaming up with Google to work on some of the hardest problems in computer science so we can turn the next decade's 'unrealistic' visions into reality."
Kurzweil's novels include The Age of Spiritual Machines and Fantastic Voyage: Live Long Enough to Live Forever. His first day on Google's payroll is today, Monday the 17th of December.