Paul Ryan: “The fatal conceit of Obamacare” is that healthy people are subsidizing the sick. Isn’t that how employer-based insurance works? pic.twitter.com/eGW7nfoCYP

Paul Ryan is aghast that healthy individuals are paying into an insurance pot that’s used when people are sick. But ... that’s exactly the way insurance works.

Twitter positively erupted Thursday to school Mr. Health Insurance on the concept.

Everyone pays into the pot and draws on it when they’re sick. Younger people, who tend to be healthier than older people, pay for health insurance like everyone else. They’ll rely on it when when they need it, probably more when they’re older and there are younger, healthier people filing in behind them. It’s the same with car insurance. Some people pay for decades and never get into an accident and never collect on their coverage (though the likelihood of anyone never using health insurance is unlikely).

That’s what actuarial figures are all about, so an insurance system can assess the risks of segments of customers to determine what everyone needs to put into the pot so there’s enough to pay out when someone needs the money.

Ryan has perhaps been on taxpayer-paid health insurance for so long that he has forgotten how the concept works. He believes that’s only the way it works for Obamacare. “The conceit of Obamacare,” he said at his press conference on Trumpcare, is that “young and healthy people are going to go into the market and pay for the older, sicker people.” That’s why Obamacare is in a “death spiral,” he noted.

Twitter had a pretty predictable response to Ryan’s summary of health insurance: Duh.