Paavo Monkkonen, associate professor of urban planning and public policy, spoke to LAist about the root causes of homelessness in Los Angeles. Monkkonen pointed to rising housing costs exceeding income as the main contributor to homelessness. “People talk about [housing] like it’s a game of musical chairs, but I don’t think that’s really the right metaphor. Income differentials don’t matter in a game of musical chairs, but they do in this one,” Monkkonen said. Restrictive land-use policies have limited the amount of new housing available to accommodate a growing population, he said. Housing costs have increased because of a lack of supply of places to live and more high-income jobs that lead to gentrification and displacement in less affluent neighborhoods. “We’re building much less housing than we have at every other point in our history, in at least the last century or so,” he said.