Hurray for Human Machines

An aunt recently bought a robot to clean her house.  She was pretty pleased with it as all she had to do was to programme it and off it went.  It did not require any supervision, so she could see to other things at the same time.  Unfortunately one day, I think she said it was a malfunction, the little robot jumped happily all over her rosewood furniture and then fell flat on its face, smoke streaming from its head.  I don't know whether she has sent it for repair but if you ask me, we human machines are more reliable anytime.  At least when we "malfunction", smoke doesn't come hissing out of our head!