Well, another phase in the race to outdo humans of their jobs is already happening. Now there are robots cooking hamburgers:
http://www.telegraph.co.uk/technology/2 ... -day-work/
While these are probably good scientific inventions, etc., it does not seem to bode well for the humans who may have held these jobs previously. More unemployment, etc.
So, which would you rather have cooking your hamburgers, a human or a robot?