The fact that the Japanese love robots is well-known. The nation of 127 million people currently employs over a quarter million robots workers, more than any other country in the world, and the number is expected to quadruple in the next 15 years. So far, most of the robots have been built for the industrial sector and therefore bear no resemblance to humans. But if some scientists have their way, the days of androids - robots that look and act like humans, are not too far away.