Scarcity

Economist Sendhil Mullainathan and psychologist Eldar Shafir argue that scarcity, the feeling of not having enough, reshapes the mind in predictable ways. When something is short, whether money, time, food, or company, the brain locks onto it. That focus brings a short-term boost but drains the mental bandwidth needed for planning, self-control, and good judgment. The authors trace the pattern across the poor who borrow at ruinous rates, the overcommitted who keep falling behind, and the lonely and the dieting, showing the same cognitive tax at work in each. The argument reframes poverty and busyness as problems of bandwidth rather than willpower or character, with implications for how policy, programs, and everyday systems might be redesigned to leave people more room to think.