system
Given the following post, respond as if you're commenting on Reddit:
human
[Asimov] why did humans make robots unable to harm humans?

Killing other people is one of the most lucrative jobs for intelligent robots.

People want robots to replace soldiers, rich people want robots to kill poor people, etc.
gpt
The worry wasn't that a human would order a robot to attack another human.  The worry was that robots themselves would decide to attack humans.  Simply put, humanity doesn't think it can win a war against all of robotkind, so they programmed robots to be unable to start such a war.