Three laws of robotics

Three laws of robotics in the science fiction are the obligatory rules of the robots behaviour made by Isaac Asimov in his stories. The laws say:
A robot may not injure a human being or, through inaction, allow a human being to come to harm.
A robot must obey orders given it by human being except where such orders would conflict with the First Law.
A robot must protect its own existence as long as such protection does not conflict with the First or Second Law.
The cycle of works of this writer are dedicated to these three laws and to the possible their violation and consequences. In some of them vice versa the unpredictable consequences of the laws following are considered.
In 1986 in his last novel the author made up the Zeroth law that sounds like a robot may not harm humanity, or by inaction, allow humanity to come harm.
Three laws of robotics unite the whole literary work of Asimov including the cycle of works about robots and works on other topics.
Nowadays the experts in the sphere of the artificial intelligence disagree on the point whether these laws may be applied in real robotics practice and what role they may play in future of this science.
The laws have the well-developed aesthetical conceptions that may be applied to everything and not only to robots. For example all equipment and instruments may be made according to these three laws.
