WHY HEALTH INSURANCE isn’t insurance.

Plus, related thoughts from Megan McArdle: “We force everyone to pay into fire departments because fires have very bad negative externalities: if your house catches on fire, unless you live on a rural farm, there’s a good chance that your neighbor’s house will burn down too. Fire prevention is a genuine public good; most health care, with the exception of things meant to stop the spread of infectious disease, simply isn’t.”