N > M. We need more homes than we have. That is not an economic model. That is a simple, relatable, metric. That is the best property of the YIMBY movement. Wh

N > M. We need more homes than we have. That is not an economic model. That is a simple, relatable, metric. That is the best property of the YIMBY movement. Whether “missing middle” small apartment buildings or “social housing” hundred-unit buildings, all of those are illegal in places where they should be legal. It can be summed up in a simple metric. We need more homes than we have. If we need 20 years of building, then we better get started now.