We believe that efforts to protect children from environmental hazards and vehicular accidents have been very good for children. Exposure to lead and cigarette smoke confer no benefits; being in a car crash without a seat belt does not make kids more resilient in future car crashes. But efforts to protect kids from risk by preventing them from gaining experience—such as walking to school, climbing a tree, or using sharp scissors—are different. Such protections come with costs, as kids miss out on opportunities to learn skills, independence, and risk assessment. (Keeping them indoors also
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