An Extended Set of the Laws of Robotics

The Meta-Law
A robot may not act unless its actions are subject to the Laws of Robotics.

Law Zero
A robot may not injure humanity, or, through inaction, allow humanity to come to harm.

Law One
A robot may not injure a human being, or, through inaction, allow a human being to come to harm, unless this would violate a higher-order Law.

Law Two
A robot must obey orders given it by human beings, except where such orders would conflict with a higher-order Law.
A robot must obey orders given it by superordinate robots, except where such orders would conflict with a higher-order Law.

Law Three
A robot must protect the existence of a superordinate robot as long as such protection does not conflict with a higher-order Law.
A robot must protect its own existence as long as such protection does not conflict with a higher-order Law.

Law Four
A robot must perform the duties for which it has been programmed, except where that would conflict with a higher-order law.

The Procreation Law
A robot may not take any part in the design or manufacture of a robot unless the new robot's actions are subject to the Laws of Robotics.