What we should care about is the aggregate public health impact of the intervention. In the case of bicycles and motorcycles I think people attribute magical sa

What we should care about is the aggregate public health impact of the intervention. In the case of bicycles and motorcycles I think people attribute magical safety benefits to helmets that don’t exist. Similar to protective gear in hockey actually increasing injuries I suspect that the impact of helmets is bimodal: some people respect the risk of going XX mph nearly unprotected and others view their protective gear as a shield. I’m also willing to bet that the biggest change in safety for bike helmets is actually people outside of the urban areas most likely to have safety mandates