Computers will be cleverer than humans by 2029, according to Ray Kurzweil, Google's director of engineering.

The entrepreneur and futurist has predicted that in 15 years, computers will be more intelligent than we are and will be able to understand what we say, learn from experience, make jokes, tell stories and even flirt.

Kurzweil, 66, who is considered by some to be the world's leading artificial intelligence (AI) visionary, is recognized by technologists for popularizing the idea of "the singularity" — the moment in the future when men and machines will supposedly converge. Google hired him at the end of 2012 to work on the company's next breakthrough: an artificially intelligent search engine that knows us better than we know ourselves.