ABSTRACT
"Robots must act morally" as a new code of conduct for robots. This is a code of conduct for the purpose of the robot most effectively achieving the mission given to it by striving for a global system of optimization that includes other robots or other human beings. The engineering of morality is engineering for the sake of human beings, but it could be considered very useful even in thinking about a code of conduct for robots by appropriately modifying restrictive conditions and targeted functions. To visualize a code of conduct for robots, it may be instructive to consider how a prominent human code of conduct has evolved and has taken its form. There are two orientations in regard to the direction of the evolution of future robots, namely, the "robot life form theory", which assumes that robots evolve as new kind of life form, and the "robot machine theory", which assumes that they evolve as intelligent machines.
