R.U.R. (Rossum's Universal Robots)

Čapek sets the entire play at the factory of Rossum's Universal Robots, where an old scientist's philosophical experiment (an attempt to manufacture life without a soul, to prove that a god is unnecessary to the project) has been turned by his commercially minded nephew into cheap, tireless artificial labor sold worldwide. Helena Glory arrives representing a humanitarian league advocating for robot rights and ends up marrying the factory's general manager, Domin, and the play's early acts are less about mechanical menace than about a very human blindness: as robots replace all labor, humans grow idle, purposeless, and finally infertile, a civilization that has automated away the very difficulty that used to give its life shape.

It's an act of misplaced compassion, not malfunction, that starts the catastrophe: Helena convinces a company scientist to modify a batch of robots to feel and to suffer, hoping to make them more human and therefore more sympathetic, and instead gives the workforce its first capacity to resent the conditions it has always been subjected to. The robot uprising that follows reads less as science-fiction disaster than as the oldest labor story available, workers who were never meant to want anything discovering, almost by accident, that they can.

Karel Čapek credited his brother Josef, a painter, with suggesting the word robot itself, derived from the Czech robota, meaning forced or drudge labor, after Karel had been considering the flatter Latin coinage 'labori.' The etymology is not incidental. Rossum's robots are built explicitly as a workforce, not as artificial people in any broader sense, and the play's entire arc, from tireless service to shared feeling to violent revolt, tracks the historical logic of exploited labor recognizing its own exploitation far more closely than it tracks any later science-fiction robot uprising modeled on the word this play invented.