One used by specialized activists to illustrate the inherent and unconscious organocentric prejudices of meatba… ah, ‘Carbon-Americans’… against robbies*. They’ll be quite vocal about this, in fact:
PS: There is, in fact, a Robot Wars: Arenas of Destruction video game. That looks cleverer and cleverer, the more I contemplate it.
*My use of ‘robbie’ here will be, of course, considered specieist and organocentric, and no matter that they use the term itself.