Economists Jeffrey Sachs of Columbia University and Laurence Kotlikoff of Boston University argue, “What if machines are getting so smart, thanks to their microprocessor brains, that they no longer need unskilled labor to operate?” After all, they write:

Smart machines now collect our highway tolls, check us out at stores, take our blood pressure, massage our backs, give us directions, answer our phones, print our documents, transmit our messages, rock our babies, read our books, turn on our lights, shine our shoes, guard our homes, fly our planes, write our wills, teach our children, kill our enemies, and the list goes on. More