Mr. Zero is just another cog. He can’t fulfill his own needs, much less those of his wife Mrs. Zero, or his workwife Daisy. But when Mr. Zero’s boss replaces him with a machine, Mr. Zero lashes out violently, propelling him on a wild existential journey that is scarily current, despite being written over 100 years ago. In a production from The New Group, this experimental revival dusts off Elmer L. Rice’s 1923 satire The Adding Machine to reveal the emotional impact of what it means to be replaceable.