MachineshavecomealongwaysincetheIndustrialRevolution.Theycontinuetofillfactoryfloorsandmanufacturingplants,butnowtheircapabilitiesextendbeyondmanualactivitiestocognitivetasksthat,untilrecently,onlyhumanswerecapableofperforming.Judgingsongcompetitions,drivingautomobiles,andmoppingthefloo