In his first major speech since leaving office, former President Barack Obama endorsed the idea of providing a universal basic income. Speaking at the Nelson Mandela Annual Lecture in South Africa on Tuesday, Obama raised the notion of guaranteed income as a way to reduce what he called "yawning disparities" in wealth, education, and security across different socioeconomic groups. "It's not just money that a job provides," said Obama. "It provides dignity and structure and a sense of place and a sense of purpose. So we're going to have to consider new ways of thinking about these problems, like a...