Robots won't kill the workforce. They'll save the global economy.

The United Nations forecasts that the global population will rise from 7.3 billion to nearly 10 billion by 2050, a big number that often prompts warnings about overpopulation. Some have come from neo-Malthusians, who fear that population growth will outstrip the food supply, leaving a hungry planet. Others appear in the tirades of anti-immigrant populists, invoking the specter of a rising tide of humanity as cause to slam borders shut. Still others inspire a chorus of neo-Luddites, who fear that the "rise of the robots" is rapidly making human workers obsolete, a threat all the more alarming if the human population is exploding. They may be the one thing that can protect the global economy from the dangers that lie ahead.