ABSTRACT
Thus,instillinghuman-levelperformanceinarobothasturned outtobetremendouslydifficult.Acomputerprogramhasnowbeat thereigningworldchampionatchessbutaprogramthatreliably recognizes,say,achairinanarbitraryscenestilldoesnotexist.The parallelcomputerinsideeachofourheadsdevoteslargechunksof greymattertotheproblemsofperceptionandmanipulation.
